671065992 has 32 divisors (see below), whose sum is σ = 1864072800. Its totient is φ = 223688592.

The previous prime is 671065991. The next prime is 671066023. The reversal of 671065992 is 299560176.

It is a happy number.

671065992 is nontrivially palindromic in base 7.

It is not an unprimeable number, because it can be changed into a prime (671065991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1553178 + ... + 1553609.

It is an arithmetic number, because the mean of its divisors is an integer number (58252275).

Almost surely, 2^671065992 is an apocalyptic number.

It is an amenable number.

671065992 is an abundant number, since it is smaller than the sum of its proper divisors (1193006808).

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

671065992 is a wasteful number, since it uses less digits than its factorization.

671065992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106802 (or 3106792 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 671065992 is about 25904.9414591116. The cubic root of 671065992 is about 875.4978356662.

The spelling of 671065992 in words is "six hundred seventy-one million, sixty-five thousand, nine hundred ninety-two".