64837537 has 2 divisors, whose sum is σ = 64837538. Its totient is φ = 64837536.

The previous prime is 64837517. The next prime is 64837547. The reversal of 64837537 is 73573846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62789776 + 2047761 = 7924^2 + 1431^2 .

It is a cyclic number.

It is not a de Polignac number, because 64837537 - 2¹⁵ = 64804769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64837493 and 64837502.

It is not a weakly prime, because it can be changed into another prime (64837517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32418768 + 32418769.

It is an arithmetic number, because the mean of its divisors is an integer number (32418769).

Almost surely, 2^64837537 is an apocalyptic number.

It is an amenable number.

64837537 is a deficient number, since it is larger than the sum of its proper divisors (1).

64837537 is an equidigital number, since it uses as much as digits as its factorization.

64837537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 43.

The square root of 64837537 is about 8052.1759171046. The cubic root of 64837537 is about 401.7373121916.

The spelling of 64837537 in words is "sixty-four million, eight hundred thirty-seven thousand, five hundred thirty-seven".