64195953 has 16 divisors (see below), whose sum is σ = 88166400. Its totient is φ = 41530320.

The previous prime is 64195949. The next prime is 64195979. The reversal of 64195953 is 35959146.

It is not a de Polignac number, because 64195953 - 2² = 64195949 is a prime.

It is a super-2 number, since 2×64195953² = 8242240763156418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64195993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11688 + ... + 16278.

It is an arithmetic number, because the mean of its divisors is an integer number (5510400).

Almost surely, 2^64195953 is an apocalyptic number.

It is an amenable number.

64195953 is a deficient number, since it is larger than the sum of its proper divisors (23970447).

64195953 is a wasteful number, since it uses less digits than its factorization.

64195953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732.

The product of its digits is 145800, while the sum is 42.

The square root of 64195953 is about 8012.2377024150. The cubic root of 64195953 is about 400.4078194835.

The spelling of 64195953 in words is "sixty-four million, one hundred ninety-five thousand, nine hundred fifty-three".