168269690 has 16 divisors (see below), whose sum is σ = 303266592. Its totient is φ = 67223184.

The previous prime is 168269677. The next prime is 168269693. The reversal of 168269690 is 96962861.

It is a super-2 number, since 2×168269690² = 56629377145392200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168269693) 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, 1904 + ... + 18443.

It is an arithmetic number, because the mean of its divisors is an integer number (18954162).

Almost surely, 2^168269690 is an apocalyptic number.

168269690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168269690 is a deficient number, since it is larger than the sum of its proper divisors (134996902).

168269690 is a wasteful number, since it uses less digits than its factorization.

168269690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21181.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 168269690 is about 12971.8807425909. The cubic root of 168269690 is about 552.0799370512.

The spelling of 168269690 in words is "one hundred sixty-eight million, two hundred sixty-nine thousand, six hundred ninety".