64656505 has 8 divisors (see below), whose sum is σ = 78681024. Its totient is φ = 50996400.

The previous prime is 64656481. The next prime is 64656517. The reversal of 64656505 is 50565646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64656505 - 2⁷ = 64656377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90711 + ... + 91420.

It is an arithmetic number, because the mean of its divisors is an integer number (9835128).

Almost surely, 2^64656505 is an apocalyptic number.

It is an amenable number.

64656505 is a deficient number, since it is larger than the sum of its proper divisors (14024519).

64656505 is a wasteful number, since it uses less digits than its factorization.

64656505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182207.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 64656505 is about 8040.9268744343. The cubic root of 64656505 is about 401.3630685840.

The spelling of 64656505 in words is "sixty-four million, six hundred fifty-six thousand, five hundred five".