162975987 has 12 divisors (see below), whose sum is σ = 235616160. Its totient is φ = 108555408.

The previous prime is 162975983. The next prime is 162976049. The reversal of 162975987 is 789579261.

162975987 is a `hidden beast` number, since 1 + 629 + 7 + 5 + 9 + 8 + 7 = 666.

It is not a de Polignac number, because 162975987 - 2² = 162975983 is a prime.

It is a super-2 number, since 2×162975987² = 53122344677248338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (162975983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3814 + ... + 18452.

It is an arithmetic number, because the mean of its divisors is an integer number (19634680).

Almost surely, 2^162975987 is an apocalyptic number.

162975987 is a deficient number, since it is larger than the sum of its proper divisors (72640173).

162975987 is a wasteful number, since it uses less digits than its factorization.

162975987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15882 (or 15879 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The square root of 162975987 is about 12766.2048785064. The cubic root of 162975987 is about 546.2287311999.

The spelling of 162975987 in words is "one hundred sixty-two million, nine hundred seventy-five thousand, nine hundred eighty-seven".