64496137 has 2 divisors, whose sum is σ = 64496138. Its totient is φ = 64496136.

The previous prime is 64496123. The next prime is 64496167. The reversal of 64496137 is 73169446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61842496 + 2653641 = 7864^2 + 1629^2 .

It is a cyclic number.

It is not a de Polignac number, because 64496137 - 2²³ = 56107529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64496137.

It is not a weakly prime, because it can be changed into another prime (64496167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32248068 + 32248069.

It is an arithmetic number, because the mean of its divisors is an integer number (32248069).

Almost surely, 2^64496137 is an apocalyptic number.

It is an amenable number.

64496137 is a deficient number, since it is larger than the sum of its proper divisors (1).

64496137 is an equidigital number, since it uses as much as digits as its factorization.

64496137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 64496137 is about 8030.9486986283. The cubic root of 64496137 is about 401.0309592746.

The spelling of 64496137 in words is "sixty-four million, four hundred ninety-six thousand, one hundred thirty-seven".