68637652 has 18 divisors (see below), whose sum is σ = 126773178. Its totient is φ = 32511888.

The previous prime is 68637637. The next prime is 68637659. The reversal of 68637652 is 25673686.

It can be written as a sum of positive squares in only one way, i.e., 68624656 + 12996 = 8284^2 + 114^2 .

It is a super-2 number, since 2×68637652² = 9422254544146208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68637599 and 68637608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68637659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22323 + ... + 25210.

Almost surely, 2^68637652 is an apocalyptic number.

It is an amenable number.

68637652 is a deficient number, since it is larger than the sum of its proper divisors (58135526).

68637652 is a wasteful number, since it uses less digits than its factorization.

68637652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47575 (or 47554 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 68637652 is about 8284.7843665360. The cubic root of 68637652 is about 409.4373642883.

The spelling of 68637652 in words is "sixty-eight million, six hundred thirty-seven thousand, six hundred fifty-two".