68637532 has 12 divisors (see below), whose sum is σ = 122151960. Its totient is φ = 33736976.

The previous prime is 68637529. The next prime is 68637533. The reversal of 68637532 is 23573686.

It is a super-2 number, since 2×68637532² = 9422221598102048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68637533) 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 3 ways as a sum of consecutive naturals, for example, 145183 + ... + 145654.

It is an arithmetic number, because the mean of its divisors is an integer number (10179330).

Almost surely, 2^68637532 is an apocalyptic number.

It is an amenable number.

68637532 is a deficient number, since it is larger than the sum of its proper divisors (53514428).

68637532 is a wasteful number, since it uses less digits than its factorization.

68637532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290900 (or 290898 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 68637532 is about 8284.7771243408. Note that the first 3 decimals coincide. The cubic root of 68637532 is about 409.4371256802.

It can be divided in two parts, 68637 and 532, that added together give a square (69169 = 263²).

The spelling of 68637532 in words is "sixty-eight million, six hundred thirty-seven thousand, five hundred thirty-two".