68642004 has 24 divisors (see below), whose sum is σ = 160299328. Its totient is φ = 22861440.

The previous prime is 68641999. The next prime is 68642009. The reversal of 68642004 is 40024686.

It is an interprime number because it is at equal distance from previous prime (68641999) and next prime (68642009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68642009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24609 + ... + 27255.

Almost surely, 2^68642004 is an apocalyptic number.

It is an amenable number.

68642004 is an abundant number, since it is smaller than the sum of its proper divisors (91657324).

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

68642004 is a wasteful number, since it uses less digits than its factorization.

68642004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815 (or 4813 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 68642004 is about 8285.0470125401. The cubic root of 68642004 is about 409.4460176231.

The spelling of 68642004 in words is "sixty-eight million, six hundred forty-two thousand, four".