64477279 has 16 divisors (see below), whose sum is σ = 70087680. Its totient is φ = 59119200.

The previous prime is 64477271. The next prime is 64477291. The reversal of 64477279 is 97277446.

It is a cyclic number.

It is not a de Polignac number, because 64477279 - 2³ = 64477271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64477271) 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, 91629 + ... + 92329.

It is an arithmetic number, because the mean of its divisors is an integer number (4380480).

Almost surely, 2^64477279 is an apocalyptic number.

64477279 is a deficient number, since it is larger than the sum of its proper divisors (5610401).

64477279 is a wasteful number, since it uses less digits than its factorization.

64477279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870.

The product of its digits is 592704, while the sum is 46.

The square root of 64477279 is about 8029.7745298358. The cubic root of 64477279 is about 400.9918697033.

The spelling of 64477279 in words is "sixty-four million, four hundred seventy-seven thousand, two hundred seventy-nine".