64752491 has 2 divisors, whose sum is σ = 64752492. Its totient is φ = 64752490.

The previous prime is 64752481. The next prime is 64752581. The reversal of 64752491 is 19425746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64752491 - 2¹⁴ = 64736107 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64752481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32376245 + 32376246.

It is an arithmetic number, because the mean of its divisors is an integer number (32376246).

Almost surely, 2^64752491 is an apocalyptic number.

64752491 is a deficient number, since it is larger than the sum of its proper divisors (1).

64752491 is an equidigital number, since it uses as much as digits as its factorization.

64752491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 64752491 is about 8046.8932514356. The cubic root of 64752491 is about 401.5615852785.

The spelling of 64752491 in words is "sixty-four million, seven hundred fifty-two thousand, four hundred ninety-one".