64246401 has 6 divisors (see below), whose sum is σ = 92800370. Its totient is φ = 42830928.

The previous prime is 64246387. The next prime is 64246421. The reversal of 64246401 is 10464246.

It can be written as a sum of positive squares in only one way, i.e., 64016001 + 230400 = 8001^2 + 480^2 .

It is not a de Polignac number, because 64246401 - 2⁹ = 64245889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64246421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3569236 + ... + 3569253.

Almost surely, 2^64246401 is an apocalyptic number.

It is an amenable number.

64246401 is a deficient number, since it is larger than the sum of its proper divisors (28553969).

64246401 is a wasteful number, since it uses less digits than its factorization.

64246401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7138495 (or 7138492 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 64246401 is about 8015.3852683449. The cubic root of 64246401 is about 400.5126780390.

The spelling of 64246401 in words is "sixty-four million, two hundred forty-six thousand, four hundred one".