68564660 has 24 divisors (see below), whose sum is σ = 144377856. Its totient is φ = 27351200.

The previous prime is 68564659. The next prime is 68564701. The reversal of 68564660 is 6646586.

It is a super-2 number, since 2×68564660² = 9402225201831200, which contains 22 as substring.

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, 3185 + ... + 12135.

It is an arithmetic number, because the mean of its divisors is an integer number (6015744).

Almost surely, 2^68564660 is an apocalyptic number.

It is an amenable number.

68564660 is an abundant number, since it is smaller than the sum of its proper divisors (75813196).

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

68564660 is a wasteful number, since it uses less digits than its factorization.

68564660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343 (or 9341 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 68564660 is about 8280.3780106949. The cubic root of 68564660 is about 409.2921755018.

The spelling of 68564660 in words is "sixty-eight million, five hundred sixty-four thousand, six hundred sixty".