68641264 has 10 divisors (see below), whose sum is σ = 132992480. Its totient is φ = 34320624.

The previous prime is 68641259. The next prime is 68641267. The reversal of 68641264 is 46214686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68641267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2145024 + ... + 2145055.

It is an arithmetic number, because the mean of its divisors is an integer number (13299248).

Almost surely, 2^68641264 is an apocalyptic number.

It is an amenable number.

68641264 is a deficient number, since it is larger than the sum of its proper divisors (64351216).

68641264 is a wasteful number, since it uses less digits than its factorization.

68641264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290087 (or 4290081 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 68641264 is about 8285.0023536508. The cubic root of 68641264 is about 409.4445462639. Note that the first 3 decimals are identical.

It can be divided in two parts, 6864 and 1264, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 68641264 in words is "sixty-eight million, six hundred forty-one thousand, two hundred sixty-four".