64752749 has 2 divisors, whose sum is σ = 64752750. Its totient is φ = 64752748.

The previous prime is 64752731. The next prime is 64752757. The reversal of 64752749 is 94725746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 17280649 = 6890^2 + 4157^2 .

It is a cyclic number.

It is not a de Polignac number, because 64752749 - 2¹⁶ = 64687213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64752719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32376374 + 32376375.

It is an arithmetic number, because the mean of its divisors is an integer number (32376375).

Almost surely, 2^64752749 is an apocalyptic number.

It is an amenable number.

64752749 is a deficient number, since it is larger than the sum of its proper divisors (1).

64752749 is an equidigital number, since it uses as much as digits as its factorization.

64752749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 64752749 is about 8046.9092824512. The cubic root of 64752749 is about 401.5621186055.

The spelling of 64752749 in words is "sixty-four million, seven hundred fifty-two thousand, seven hundred forty-nine".