245172670 has 32 divisors (see below), whose sum is σ = 467169120. Its totient is φ = 92480640.

The previous prime is 245172601. The next prime is 245172673. The reversal of 245172670 is 76271542.

It is a super-2 number, since 2×245172670² = 120219276229857800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245172673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2640 + ... + 22300.

It is an arithmetic number, because the mean of its divisors is an integer number (14599035).

Almost surely, 2^245172670 is an apocalyptic number.

245172670 is a deficient number, since it is larger than the sum of its proper divisors (221996450).

245172670 is a wasteful number, since it uses less digits than its factorization.

245172670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19740.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 245172670 is about 15657.9906118250. The cubic root of 245172670 is about 625.8794403550.

The spelling of 245172670 in words is "two hundred forty-five million, one hundred seventy-two thousand, six hundred seventy".