670726782 has 48 divisors (see below), whose sum is σ = 1654293888. Its totient is φ = 194412240.

The previous prime is 670726747. The next prime is 670726811. The reversal of 670726782 is 287627076.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69088 + ... + 78195.

It is an arithmetic number, because the mean of its divisors is an integer number (34464456).

Almost surely, 2^670726782 is an apocalyptic number.

670726782 is an abundant number, since it is smaller than the sum of its proper divisors (983567106).

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

670726782 is a wasteful number, since it uses less digits than its factorization.

670726782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147325 (or 147322 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 670726782 is about 25898.3934250756. The cubic root of 670726782 is about 875.3502954455.

It can be divided in two parts, 6707 and 26782, that added together give a square (33489 = 183²).

The spelling of 670726782 in words is "six hundred seventy million, seven hundred twenty-six thousand, seven hundred eighty-two".