670688782 has 8 divisors (see below), whose sum is σ = 1038485952. Its totient is φ = 324526800.

The previous prime is 670688773. The next prime is 670688801. The reversal of 670688782 is 287886076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5408719 + ... + 5408842.

It is an arithmetic number, because the mean of its divisors is an integer number (129810744).

Almost surely, 2^670688782 is an apocalyptic number.

670688782 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

670688782 is a deficient number, since it is larger than the sum of its proper divisors (367797170).

670688782 is a wasteful number, since it uses less digits than its factorization.

670688782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10817594.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 670688782 is about 25897.6597784433. The cubic root of 670688782 is about 875.3337641542. Note that the first 3 decimals are identical.

The spelling of 670688782 in words is "six hundred seventy million, six hundred eighty-eight thousand, seven hundred eighty-two".