245704690 has 32 divisors (see below), whose sum is σ = 551401344. Its totient is φ = 76583040.

The previous prime is 245704681. The next prime is 245704691. The reversal of 245704690 is 96407542.

It is a super-2 number, since 2×245704690² = 120741589375992200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245704691) 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, 158779 + ... + 160318.

It is an arithmetic number, because the mean of its divisors is an integer number (17231292).

Almost surely, 2^245704690 is an apocalyptic number.

245704690 is an abundant number, since it is smaller than the sum of its proper divisors (305696654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245704690 is a wasteful number, since it uses less digits than its factorization.

245704690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319122.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 245704690 is about 15674.9701754102. The cubic root of 245704690 is about 626.3318287556.

The spelling of 245704690 in words is "two hundred forty-five million, seven hundred four thousand, six hundred ninety".