68138604 has 48 divisors (see below), whose sum is σ = 184343040. Its totient is φ = 21724560.

The previous prime is 68138593. The next prime is 68138633. The reversal of 68138604 is 40683186.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11232 + ... + 16199.

It is an arithmetic number, because the mean of its divisors is an integer number (3840480).

Almost surely, 2^68138604 is an apocalyptic number.

It is an amenable number.

68138604 is an abundant number, since it is smaller than the sum of its proper divisors (116204436).

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

68138604 is a wasteful number, since it uses less digits than its factorization.

68138604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27467 (or 27459 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 68138604 is about 8254.6110750295. The cubic root of 68138604 is about 408.4426424374.

The spelling of 68138604 in words is "sixty-eight million, one hundred thirty-eight thousand, six hundred four".