64704855 has 16 divisors (see below), whose sum is σ = 103872384. Its totient is φ = 34394400.

The previous prime is 64704841. The next prime is 64704863. The reversal of 64704855 is 55840746.

It is not a de Polignac number, because 64704855 - 2⁸ = 64704599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2421 + ... + 11630.

It is an arithmetic number, because the mean of its divisors is an integer number (6492024).

Almost surely, 2^64704855 is an apocalyptic number.

64704855 is a deficient number, since it is larger than the sum of its proper divisors (39167529).

64704855 is a wasteful number, since it uses less digits than its factorization.

64704855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14366.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 64704855 is about 8043.9328067805. The cubic root of 64704855 is about 401.4630898123.

It can be divided in two parts, 6470 and 4855, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 64704855 in words is "sixty-four million, seven hundred four thousand, eight hundred fifty-five".