660294480 has 80 divisors (see below), whose sum is σ = 2061743040. Its totient is φ = 174802944.

The previous prime is 660294473. The next prime is 660294487. The reversal of 660294480 is 84492066.

660294480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (660294473) and next prime (660294487).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660294487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23464 + ... + 43256.

It is an arithmetic number, because the mean of its divisors is an integer number (25771788).

Almost surely, 2^660294480 is an apocalyptic number.

660294480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660294480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1030871520).

660294480 is an abundant number, since it is smaller than the sum of its proper divisors (1401448560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660294480 is a wasteful number, since it uses less digits than its factorization.

660294480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19948 (or 19942 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 660294480 is about 25696.1958273983. The cubic root of 660294480 is about 870.7882405675.

The spelling of 660294480 in words is "six hundred sixty million, two hundred ninety-four thousand, four hundred eighty".