671590720 has 56 divisors (see below), whose sum is σ = 1683410400. Its totient is φ = 254495232.

The previous prime is 671590691. The next prime is 671590721. The reversal of 671590720 is 27095176.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 671590720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671590721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49150 + ... + 61309.

It is an arithmetic number, because the mean of its divisors is an integer number (30060900).

Almost surely, 2^671590720 is an apocalyptic number.

It is an amenable number.

671590720 is an abundant number, since it is smaller than the sum of its proper divisors (1011819680).

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

671590720 is a wasteful number, since it uses less digits than its factorization.

671590720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110495 (or 110485 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 671590720 is about 25915.0674319015. The cubic root of 671590720 is about 875.7259694843.

The spelling of 671590720 in words is "six hundred seventy-one million, five hundred ninety thousand, seven hundred twenty".