64839601 has 2 divisors, whose sum is σ = 64839602. Its totient is φ = 64839600.

The previous prime is 64839589. The next prime is 64839611. The reversal of 64839601 is 10693846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46785600 + 18054001 = 6840^2 + 4249^2 .

It is a cyclic number.

It is not a de Polignac number, because 64839601 - 2¹³ = 64831409 is a prime.

It is not a weakly prime, because it can be changed into another prime (64839611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32419800 + 32419801.

It is an arithmetic number, because the mean of its divisors is an integer number (32419801).

Almost surely, 2^64839601 is an apocalyptic number.

It is an amenable number.

64839601 is a deficient number, since it is larger than the sum of its proper divisors (1).

64839601 is an equidigital number, since it uses as much as digits as its factorization.

64839601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 64839601 is about 8052.3040801997. The cubic root of 64839601 is about 401.7415750361.

The spelling of 64839601 in words is "sixty-four million, eight hundred thirty-nine thousand, six hundred one".