670740331 has 4 divisors (see below), whose sum is σ = 672085000. Its totient is φ = 669395664.

The previous prime is 670740311. The next prime is 670740373. The reversal of 670740331 is 133047076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670740331 - 2⁹ = 670739819 is a prime.

It is a super-2 number, since 2×670740331² = 899785183259979122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670740293 and 670740302.

It is not an unprimeable number, because it can be changed into a prime (670740311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671586 + ... + 672583.

It is an arithmetic number, because the mean of its divisors is an integer number (168021250).

Almost surely, 2^670740331 is an apocalyptic number.

670740331 is a deficient number, since it is larger than the sum of its proper divisors (1344669).

670740331 is a wasteful number, since it uses less digits than its factorization.

670740331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344668.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 670740331 is about 25898.6550036870. The cubic root of 670740331 is about 875.3561895699.

The spelling of 670740331 in words is "six hundred seventy million, seven hundred forty thousand, three hundred thirty-one".