68612664 has 32 divisors (see below), whose sum is σ = 171738000. Its totient is φ = 22843392.

The previous prime is 68612653. The next prime is 68612671. The reversal of 68612664 is 46621686.

It is a super-2 number, since 2×68612664² = 9415395322353792, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32802 + ... + 34830.

Almost surely, 2^68612664 is an apocalyptic number.

It is an amenable number.

68612664 is an abundant number, since it is smaller than the sum of its proper divisors (103125336).

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

68612664 is a wasteful number, since it uses less digits than its factorization.

68612664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447 (or 3443 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 68612664 is about 8283.2761634513. The cubic root of 68612664 is about 409.3876721132.

The spelling of 68612664 in words is "sixty-eight million, six hundred twelve thousand, six hundred sixty-four".