669466560 has 112 divisors (see below), whose sum is σ = 2429231616. Its totient is φ = 153019392.

The previous prime is 669466559. The next prime is 669466561. The reversal of 669466560 is 65664966.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (669466559) and next prime (669466561).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669466561) 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, 43092 + ... + 56531.

It is an arithmetic number, because the mean of its divisors is an integer number (21689568).

Almost surely, 2^669466560 is an apocalyptic number.

669466560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669466560 is an abundant number, since it is smaller than the sum of its proper divisors (1759765056).

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

669466560 is a wasteful number, since it uses less digits than its factorization.

669466560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99650 (or 99640 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 48.

The square root of 669466560 is about 25874.0518666868. The cubic root of 669466560 is about 874.8017226923.

The spelling of 669466560 in words is "six hundred sixty-nine million, four hundred sixty-six thousand, five hundred sixty".