245972657 has 8 divisors (see below), whose sum is σ = 281299200. Its totient is φ = 210693024.

The previous prime is 245972647. The next prime is 245972681. The reversal of 245972657 is 756279542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245972657 - 2⁸ = 245972401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245972647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344 + ... + 22182.

It is an arithmetic number, because the mean of its divisors is an integer number (35162400).

Almost surely, 2^245972657 is an apocalyptic number.

It is an amenable number.

245972657 is a deficient number, since it is larger than the sum of its proper divisors (35326543).

245972657 is a wasteful number, since it uses less digits than its factorization.

245972657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23455.

The product of its digits is 1058400, while the sum is 47.

The square root of 245972657 is about 15683.5154541321. The cubic root of 245972657 is about 626.5594397734.

The spelling of 245972657 in words is "two hundred forty-five million, nine hundred seventy-two thousand, six hundred fifty-seven".