64656253 has 8 divisors (see below), whose sum is σ = 69285888. Its totient is φ = 60118464.

The previous prime is 64656239. The next prime is 64656257. The reversal of 64656253 is 35265646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64656253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64656257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21501 + ... + 24322.

It is an arithmetic number, because the mean of its divisors is an integer number (8660736).

Almost surely, 2^64656253 is an apocalyptic number.

It is an amenable number.

64656253 is a deficient number, since it is larger than the sum of its proper divisors (4629635).

64656253 is a wasteful number, since it uses less digits than its factorization.

64656253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45923.

The product of its digits is 129600, while the sum is 37.

The square root of 64656253 is about 8040.9112045837. The cubic root of 64656253 is about 401.3625471432.

The spelling of 64656253 in words is "sixty-four million, six hundred fifty-six thousand, two hundred fifty-three".