64537279 has 2 divisors, whose sum is σ = 64537280. Its totient is φ = 64537278.

The previous prime is 64537261. The next prime is 64537303. The reversal of 64537279 is 97273546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64537279 - 2¹⁷ = 64406207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64537229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32268639 + 32268640.

It is an arithmetic number, because the mean of its divisors is an integer number (32268640).

Almost surely, 2^64537279 is an apocalyptic number.

64537279 is a deficient number, since it is larger than the sum of its proper divisors (1).

64537279 is an equidigital number, since it uses as much as digits as its factorization.

64537279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 43.

The square root of 64537279 is about 8033.5097560157. The cubic root of 64537279 is about 401.1162135211.

The spelling of 64537279 in words is "sixty-four million, five hundred thirty-seven thousand, two hundred seventy-nine".