64277665 has 16 divisors (see below), whose sum is σ = 81993600. Its totient is φ = 48235392.

The previous prime is 64277657. The next prime is 64277671. The reversal of 64277665 is 56677246.

64277665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64277665 - 2³ = 64277657 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 6501 + ... + 13069.

It is an arithmetic number, because the mean of its divisors is an integer number (5124600).

Almost surely, 2^64277665 is an apocalyptic number.

It is an amenable number.

64277665 is a deficient number, since it is larger than the sum of its proper divisors (17715935).

64277665 is a wasteful number, since it uses less digits than its factorization.

64277665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6696.

The product of its digits is 423360, while the sum is 43.

The square root of 64277665 is about 8017.3352805031. The cubic root of 64277665 is about 400.5776341953.

It can be divided in two parts, 64 and 277665, that added together give a square (277729 = 527²).

The spelling of 64277665 in words is "sixty-four million, two hundred seventy-seven thousand, six hundred sixty-five".