64528747 has 2 divisors, whose sum is σ = 64528748. Its totient is φ = 64528746.

The previous prime is 64528733. The next prime is 64528759. The reversal of 64528747 is 74782546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64528747 - 2⁷ = 64528619 is a prime.

It is not a weakly prime, because it can be changed into another prime (64528147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32264373 + 32264374.

It is an arithmetic number, because the mean of its divisors is an integer number (32264374).

Almost surely, 2^64528747 is an apocalyptic number.

64528747 is a deficient number, since it is larger than the sum of its proper divisors (1).

64528747 is an equidigital number, since it uses as much as digits as its factorization.

64528747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 43.

The square root of 64528747 is about 8032.9787127815. The cubic root of 64528747 is about 401.0985365319.

It can be divided in two parts, 645 and 28747, that added together give a palindrome (29392).

The spelling of 64528747 in words is "sixty-four million, five hundred twenty-eight thousand, seven hundred forty-seven".