64912933 has 4 divisors (see below), whose sum is σ = 67151340. Its totient is φ = 62674528.

The previous prime is 64912927. The next prime is 64912973. The reversal of 64912933 is 33921946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55383364 + 9529569 = 7442^2 + 3087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64912933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64912892 and 64912901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64912973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119160 + ... + 1119217.

It is an arithmetic number, because the mean of its divisors is an integer number (16787835).

Almost surely, 2^64912933 is an apocalyptic number.

It is an amenable number.

64912933 is a deficient number, since it is larger than the sum of its proper divisors (2238407).

64912933 is a wasteful number, since it uses less digits than its factorization.

64912933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238406.

The product of its digits is 34992, while the sum is 37.

The square root of 64912933 is about 8056.8562727655. The cubic root of 64912933 is about 401.8929712679.

The spelling of 64912933 in words is "sixty-four million, nine hundred twelve thousand, nine hundred thirty-three".