247713057 has 12 divisors (see below), whose sum is σ = 359683584. Its totient is φ = 164276280.

The previous prime is 247713047. The next prime is 247713079. The reversal of 247713057 is 750317742.

247713057 is a `hidden beast` number, since 2 + 477 + 130 + 57 = 666.

247713057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 247713057 - 2⁷ = 247712929 is a prime.

It is a super-2 number, since 2×247713057² = 122723517216570498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247713007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70333 + ... + 73770.

It is an arithmetic number, because the mean of its divisors is an integer number (29973632).

Almost surely, 2^247713057 is an apocalyptic number.

It is an amenable number.

247713057 is a deficient number, since it is larger than the sum of its proper divisors (111970527).

247713057 is a wasteful number, since it uses less digits than its factorization.

247713057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144300 (or 144297 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 247713057 is about 15738.9026618758. The cubic root of 247713057 is about 628.0337258924.

The spelling of 247713057 in words is "two hundred forty-seven million, seven hundred thirteen thousand, fifty-seven".