64315405 has 32 divisors (see below), whose sum is σ = 97355520. Its totient is φ = 39621120.

The previous prime is 64315397. The next prime is 64315423. The reversal of 64315405 is 50451346.

It is not a de Polignac number, because 64315405 - 2³ = 64315397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33327 + ... + 35203.

It is an arithmetic number, because the mean of its divisors is an integer number (3042360).

Almost surely, 2^64315405 is an apocalyptic number.

It is an amenable number.

64315405 is a deficient number, since it is larger than the sum of its proper divisors (33040115).

64315405 is a wasteful number, since it uses less digits than its factorization.

64315405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 64315405 is about 8019.6885849764. The cubic root of 64315405 is about 400.6560172652.

The spelling of 64315405 in words is "sixty-four million, three hundred fifteen thousand, four hundred five".