167390987 has 16 divisors (see below), whose sum is σ = 185129280. Its totient is φ = 150796800.

The previous prime is 167390957. The next prime is 167390989. The reversal of 167390987 is 789093761.

It is a cyclic number.

It is not a de Polignac number, because 167390987 - 2²⁰ = 166342411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167390989) 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, 24287 + ... + 30407.

It is an arithmetic number, because the mean of its divisors is an integer number (11570580).

Almost surely, 2^167390987 is an apocalyptic number.

167390987 is a deficient number, since it is larger than the sum of its proper divisors (17738293).

167390987 is a wasteful number, since it uses less digits than its factorization.

167390987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6214.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 167390987 is about 12937.9668804646. The cubic root of 167390987 is about 551.1172737293.

The spelling of 167390987 in words is "one hundred sixty-seven million, three hundred ninety thousand, nine hundred eighty-seven".