168956690 has 32 divisors (see below), whose sum is σ = 349415424. Its totient is φ = 57620160.

The previous prime is 168956663. The next prime is 168956701. The reversal of 168956690 is 96659861.

It is a super-2 number, since 2×168956690² = 57092726191512200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7052 + ... + 19688.

It is an arithmetic number, because the mean of its divisors is an integer number (10919232).

Almost surely, 2^168956690 is an apocalyptic number.

168956690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168956690 is an abundant number, since it is smaller than the sum of its proper divisors (180458734).

168956690 is a wasteful number, since it uses less digits than its factorization.

168956690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12842.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 168956690 is about 12998.3341240330. The cubic root of 168956690 is about 552.8302482920.

The spelling of 168956690 in words is "one hundred sixty-eight million, nine hundred fifty-six thousand, six hundred ninety".