64000837 has 2 divisors, whose sum is σ = 64000838. Its totient is φ = 64000836.

The previous prime is 64000819. The next prime is 64000907. The reversal of 64000837 is 73800046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46703556 + 17297281 = 6834^2 + 4159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64000837 is a prime.

It is a super-2 number, since 2×64000837² = 8192214273401138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64000817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32000418 + 32000419.

It is an arithmetic number, because the mean of its divisors is an integer number (32000419).

Almost surely, 2^64000837 is an apocalyptic number.

It is an amenable number.

64000837 is a deficient number, since it is larger than the sum of its proper divisors (1).

64000837 is an equidigital number, since it uses as much as digits as its factorization.

64000837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 64000837 is about 8000.0523123290. The cubic root of 64000837 is about 400.0017437424.

The spelling of 64000837 in words is "sixty-four million, eight hundred thirty-seven", and thus it is an aban number.