64738847 has 2 divisors, whose sum is σ = 64738848. Its totient is φ = 64738846.

The previous prime is 64738831. The next prime is 64738889. The reversal of 64738847 is 74883746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64738847 - 2⁴ = 64738831 is a prime.

It is a super-2 number, since 2×64738847² = 8382236621778818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64732847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32369423 + 32369424.

It is an arithmetic number, because the mean of its divisors is an integer number (32369424).

Almost surely, 2^64738847 is an apocalyptic number.

64738847 is a deficient number, since it is larger than the sum of its proper divisors (1).

64738847 is an equidigital number, since it uses as much as digits as its factorization.

64738847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 47.

The square root of 64738847 is about 8046.0454261705. The cubic root of 64738847 is about 401.5333789447.

The spelling of 64738847 in words is "sixty-four million, seven hundred thirty-eight thousand, eight hundred forty-seven".