64268644 has 12 divisors (see below), whose sum is σ = 122694768. Its totient is φ = 29213000.

The previous prime is 64268629. The next prime is 64268657. The reversal of 64268644 is 44686246.

64268644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64268597 and 64268606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730282 + ... + 730369.

It is an arithmetic number, because the mean of its divisors is an integer number (10224564).

Almost surely, 2^64268644 is an apocalyptic number.

It is an amenable number.

64268644 is a deficient number, since it is larger than the sum of its proper divisors (58426124).

64268644 is a wasteful number, since it uses less digits than its factorization.

64268644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460666 (or 1460664 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 64268644 is about 8016.7726673519. The cubic root of 64268644 is about 400.5588937308.

The spelling of 64268644 in words is "sixty-four million, two hundred sixty-eight thousand, six hundred forty-four".