64975733 has 4 divisors (see below), whose sum is σ = 65267328. Its totient is φ = 64684140.

The previous prime is 64975727. The next prime is 64975739. The reversal of 64975733 is 33757946.

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 an interprime number because it is at equal distance from previous prime (64975727) and next prime (64975739).

It is a cyclic number.

It is not a de Polignac number, because 64975733 - 2²⁴ = 48198517 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 (64975739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145463 + ... + 145908.

It is an arithmetic number, because the mean of its divisors is an integer number (16316832).

Almost surely, 2^64975733 is an apocalyptic number.

It is an amenable number.

64975733 is a deficient number, since it is larger than the sum of its proper divisors (291595).

64975733 is a wasteful number, since it uses less digits than its factorization.

64975733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291594.

The product of its digits is 476280, while the sum is 44.

The square root of 64975733 is about 8060.7526323539. The cubic root of 64975733 is about 402.0225332451.

The spelling of 64975733 in words is "sixty-four million, nine hundred seventy-five thousand, seven hundred thirty-three".