64275757 has 16 divisors (see below), whose sum is σ = 79311232. Its totient is φ = 50725440.

The previous prime is 64275749. The next prime is 64275767. The reversal of 64275757 is 75757246.

It is a cyclic number.

It is not a de Polignac number, because 64275757 - 2³ = 64275749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64275707) 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, 51343 + ... + 52579.

It is an arithmetic number, because the mean of its divisors is an integer number (4956952).

Almost surely, 2^64275757 is an apocalyptic number.

It is an amenable number.

64275757 is a deficient number, since it is larger than the sum of its proper divisors (15035475).

64275757 is a wasteful number, since it uses less digits than its factorization.

64275757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828.

The product of its digits is 411600, while the sum is 43.

The square root of 64275757 is about 8017.2162874654. The cubic root of 64275757 is about 400.5736706118.

The spelling of 64275757 in words is "sixty-four million, two hundred seventy-five thousand, seven hundred fifty-seven".