670791888 has 160 divisors (see below), whose sum is σ = 2140974080. Its totient is φ = 199687680.

The previous prime is 670791841. The next prime is 670791889. The reversal of 670791888 is 888197076.

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 (670791889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172170 + ... + 176022.

It is an arithmetic number, because the mean of its divisors is an integer number (13381088).

Almost surely, 2^670791888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670791888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070487040).

670791888 is an abundant number, since it is smaller than the sum of its proper divisors (1470182192).

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

670791888 is a wasteful number, since it uses less digits than its factorization.

670791888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914 (or 3902 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The square root of 670791888 is about 25899.6503451301. The cubic root of 670791888 is about 875.3786173166.

The spelling of 670791888 in words is "six hundred seventy million, seven hundred ninety-one thousand, eight hundred eighty-eight".