64087905 has 32 divisors (see below), whose sum is σ = 117676800. Its totient is φ = 29175552.

The previous prime is 64087901. The next prime is 64087957. The reversal of 64087905 is 50978046.

It is not a de Polignac number, because 64087905 - 2² = 64087901 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64087901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27111 + ... + 29379.

It is an arithmetic number, because the mean of its divisors is an integer number (3677400).

Almost surely, 2^64087905 is an apocalyptic number.

It is an amenable number.

64087905 is a deficient number, since it is larger than the sum of its proper divisors (53588895).

64087905 is a wasteful number, since it uses less digits than its factorization.

64087905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 64087905 is about 8005.4921772493. The cubic root of 64087905 is about 400.1830516341.

The spelling of 64087905 in words is "sixty-four million, eighty-seven thousand, nine hundred five".