670556880 has 200 divisors, whose sum is σ = 2661829632. Its totient is φ = 153259776.

The previous prime is 670556867. The next prime is 670556899. The reversal of 670556880 is 88655076.

670556880 is a `hidden beast` number, since 6 + 7 + 0 + 5 + 568 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37969 + ... + 52751.

Almost surely, 2^670556880 is an apocalyptic number.

670556880 is a gapful number since it is divisible by the number (60) 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 670556880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330914816).

670556880 is an abundant number, since it is smaller than the sum of its proper divisors (1991272752).

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

670556880 is a wasteful number, since it uses less digits than its factorization.

670556880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14815 (or 14800 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 670556880 is about 25895.1130524661. The cubic root of 670556880 is about 875.2763774561.

The spelling of 670556880 in words is "six hundred seventy million, five hundred fifty-six thousand, eight hundred eighty".