667890982 has 16 divisors (see below), whose sum is σ = 1103737104. Its totient is φ = 300580000.

The previous prime is 667890973. The next prime is 667890991. The reversal of 667890982 is 289098766.

It is an interprime number because it is at equal distance from previous prime (667890973) and next prime (667890991).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148069 + ... + 152512.

It is an arithmetic number, because the mean of its divisors is an integer number (68983569).

Almost surely, 2^667890982 is an apocalyptic number.

667890982 is a deficient number, since it is larger than the sum of its proper divisors (435846122).

667890982 is a wasteful number, since it uses less digits than its factorization.

667890982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300695.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 667890982 is about 25843.5868640558. The cubic root of 667890982 is about 874.1149066859.

The spelling of 667890982 in words is "six hundred sixty-seven million, eight hundred ninety thousand, nine hundred eighty-two".