671956992 has 360 divisors, whose sum is σ = 2390680320. Its totient is φ = 185794560.

The previous prime is 671956991. The next prime is 671957047. The reversal of 671956992 is 299659176.

671956992 is a `hidden beast` number, since 6 + 71 + 9 + 569 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671956991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21676017 + ... + 21676047.

Almost surely, 2^671956992 is an apocalyptic number.

671956992 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671956992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195340160).

671956992 is an abundant number, since it is smaller than the sum of its proper divisors (1718723328).

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

671956992 is an equidigital number, since it uses as much as digits as its factorization.

671956992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 43 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 671956992 is about 25922.1332455491. The cubic root of 671956992 is about 875.8851416306.

The spelling of 671956992 in words is "six hundred seventy-one million, nine hundred fifty-six thousand, nine hundred ninety-two".