68470560 has 144 divisors (see below), whose sum is σ = 247488696. Its totient is φ = 17178624.

The previous prime is 68470559. The next prime is 68470561. The reversal of 68470560 is 6507486.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68470559) and next prime (68470561).

It can be written as a sum of positive squares in 4 ways, for example, as 65999376 + 2471184 = 8124^2 + 1572^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (68470561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23082 + ... + 25878.

Almost surely, 2^68470560 is an apocalyptic number.

68470560 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 68470560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123744348).

68470560 is an abundant number, since it is smaller than the sum of its proper divisors (179018136).

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

68470560 is a wasteful number, since it uses less digits than its factorization.

68470560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835 (or 2824 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 68470560 is about 8274.6939520444. The cubic root of 68470560 is about 409.1048485486.

The spelling of 68470560 in words is "sixty-eight million, four hundred seventy thousand, five hundred sixty".