64121075 has 6 divisors (see below), whose sum is σ = 79510164. Its totient is φ = 51296840.

The previous prime is 64121063. The next prime is 64121081. The reversal of 64121075 is 57012146.

It is not a de Polignac number, because 64121075 - 2⁶ = 64121011 is a prime.

It is a super-2 number, since 2×64121075² = 8223024518311250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1282397 + ... + 1282446.

It is an arithmetic number, because the mean of its divisors is an integer number (13251694).

Almost surely, 2^64121075 is an apocalyptic number.

64121075 is a deficient number, since it is larger than the sum of its proper divisors (15389089).

64121075 is a wasteful number, since it uses less digits than its factorization.

64121075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564853 (or 2564848 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 64121075 is about 8007.5636119859. The cubic root of 64121075 is about 400.2520806883.

The spelling of 64121075 in words is "sixty-four million, one hundred twenty-one thousand, seventy-five".