64539266 has 16 divisors (see below), whose sum is σ = 107604288. Its totient is φ = 28782000.

The previous prime is 64539263. The next prime is 64539283. The reversal of 64539266 is 66293546.

It is not an unprimeable number, because it can be changed into a prime (64539263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26510 + ... + 28841.

It is an arithmetic number, because the mean of its divisors is an integer number (6725268).

Almost surely, 2^64539266 is an apocalyptic number.

64539266 is a deficient number, since it is larger than the sum of its proper divisors (43065022).

64539266 is a wasteful number, since it uses less digits than its factorization.

64539266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55417.

The product of its digits is 233280, while the sum is 41.

The square root of 64539266 is about 8033.6334245471. The cubic root of 64539266 is about 401.1203300552.

The spelling of 64539266 in words is "sixty-four million, five hundred thirty-nine thousand, two hundred sixty-six".