671666082 has 32 divisors (see below), whose sum is σ = 1356848064. Its totient is φ = 221644800.

The previous prime is 671666041. The next prime is 671666101. The reversal of 671666082 is 280666176.

It is a happy number.

It is a super-2 number, since 2×671666082² = 902270651418461448, 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, 452782 + ... + 454262.

It is an arithmetic number, because the mean of its divisors is an integer number (42401502).

Almost surely, 2^671666082 is an apocalyptic number.

671666082 is an abundant number, since it is smaller than the sum of its proper divisors (685181982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671666082 is a wasteful number, since it uses less digits than its factorization.

671666082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 671666082 is about 25916.5214100967. The cubic root of 671666082 is about 875.7587245488.

The spelling of 671666082 in words is "six hundred seventy-one million, six hundred sixty-six thousand, eighty-two".