670681776 has 40 divisors (see below), whose sum is σ = 1788488704. Its totient is φ = 216348480.

The previous prime is 670681757. The next prime is 670681783. The reversal of 670681776 is 677186076.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223876 + ... + 226851.

Almost surely, 2^670681776 is an apocalyptic number.

It is an amenable number.

670681776 is an abundant number, since it is smaller than the sum of its proper divisors (1117806928).

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

670681776 is a wasteful number, since it uses less digits than its factorization.

670681776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450769 (or 450763 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 670681776 is about 25897.5245149030. The cubic root of 670681776 is about 875.3307162380.

The spelling of 670681776 in words is "six hundred seventy million, six hundred eighty-one thousand, seven hundred seventy-six".