64372537 has 2 divisors, whose sum is σ = 64372538. Its totient is φ = 64372536.

The previous prime is 64372493. The next prime is 64372571. The reversal of 64372537 is 73527346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64256256 + 116281 = 8016^2 + 341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64372537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64372496 and 64372505.

It is not a weakly prime, because it can be changed into another prime (64372577) 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 as a sum of consecutive naturals, namely, 32186268 + 32186269.

It is an arithmetic number, because the mean of its divisors is an integer number (32186269).

Almost surely, 2^64372537 is an apocalyptic number.

It is an amenable number.

64372537 is a deficient number, since it is larger than the sum of its proper divisors (1).

64372537 is an equidigital number, since it uses as much as digits as its factorization.

64372537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 37.

The square root of 64372537 is about 8023.2497779890. The cubic root of 64372537 is about 400.7746177002.

The spelling of 64372537 in words is "sixty-four million, three hundred seventy-two thousand, five hundred thirty-seven".