671389792 has 24 divisors (see below), whose sum is σ = 1344205800. Its totient is φ = 330004224.

The previous prime is 671389787. The next prime is 671389793. The reversal of 671389792 is 297983176.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671389793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175917 + ... + 179692.

It is an arithmetic number, because the mean of its divisors is an integer number (56008575).

Almost surely, 2^671389792 is an apocalyptic number.

It is an amenable number.

671389792 is an abundant number, since it is smaller than the sum of its proper divisors (672816008).

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

671389792 is a wasteful number, since it uses less digits than its factorization.

671389792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355678 (or 355670 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 52.

The square root of 671389792 is about 25911.1904782470. The cubic root of 671389792 is about 875.6386268945.

The spelling of 671389792 in words is "six hundred seventy-one million, three hundred eighty-nine thousand, seven hundred ninety-two".