64247049 has 6 divisors (see below), whose sum is σ = 92801306. Its totient is φ = 42831360.

The previous prime is 64247039. The next prime is 64247083. The reversal of 64247049 is 94074246.

64247049 is a `hidden beast` number, since 642 + 4 + 7 + 0 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57836025 + 6411024 = 7605^2 + 2532^2 .

It is not a de Polignac number, because 64247049 - 2⁷ = 64246921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64247039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3569272 + ... + 3569289.

Almost surely, 2^64247049 is an apocalyptic number.

It is an amenable number.

64247049 is a deficient number, since it is larger than the sum of its proper divisors (28554257).

64247049 is a wasteful number, since it uses less digits than its factorization.

64247049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7138567 (or 7138564 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 64247049 is about 8015.4256905045. The cubic root of 64247049 is about 400.5140245805.

The spelling of 64247049 in words is "sixty-four million, two hundred forty-seven thousand, forty-nine".