64375757 has 4 divisors (see below), whose sum is σ = 65190720. Its totient is φ = 63560796.

The previous prime is 64375741. The next prime is 64375763. The reversal of 64375757 is 75757346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64375757 - 2⁴ = 64375741 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 (64375777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407363 + ... + 407520.

It is an arithmetic number, because the mean of its divisors is an integer number (16297680).

Almost surely, 2^64375757 is an apocalyptic number.

It is an amenable number.

64375757 is a deficient number, since it is larger than the sum of its proper divisors (814963).

64375757 is an equidigital number, since it uses as much as digits as its factorization.

64375757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814962.

The product of its digits is 617400, while the sum is 44.

The square root of 64375757 is about 8023.4504422973. The cubic root of 64375757 is about 400.7813000154.

The spelling of 64375757 in words is "sixty-four million, three hundred seventy-five thousand, seven hundred fifty-seven".