61068864 has 56 divisors (see below), whose sum is σ = 168615360. Its totient is φ = 19469824.

The previous prime is 61068823. The next prime is 61068883. The reversal of 61068864 is 46886016.

It is a super-3 number, since 3×61068864³ (a number of 24 digits) contains 333 as substring.

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, 2499 + ... + 11330.

Almost surely, 2^61068864 is an apocalyptic number.

61068864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61068864 is an abundant number, since it is smaller than the sum of its proper divisors (107546496).

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

61068864 is a wasteful number, since it uses less digits than its factorization.

61068864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13867 (or 13857 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 61068864 is about 7814.6569982310. The cubic root of 61068864 is about 393.7977953571.

The spelling of 61068864 in words is "sixty-one million, sixty-eight thousand, eight hundred sixty-four".