64266644 has 48 divisors (see below), whose sum is σ = 124750080. Its totient is φ = 28959840.

The previous prime is 64266641. The next prime is 64266649. The reversal of 64266644 is 44666246.

It is a junction number, because it is equal to n+sod(n) for n = 64266598 and 64266607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64266641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623897 + ... + 623999.

It is an arithmetic number, because the mean of its divisors is an integer number (2598960).

Almost surely, 2^64266644 is an apocalyptic number.

It is an amenable number.

64266644 is a deficient number, since it is larger than the sum of its proper divisors (60483436).

64266644 is a wasteful number, since it uses less digits than its factorization.

64266644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 189 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

The square root of 64266644 is about 8016.6479279060. The cubic root of 64266644 is about 400.5547386403.

The spelling of 64266644 in words is "sixty-four million, two hundred sixty-six thousand, six hundred forty-four".