670898831 has 2 divisors, whose sum is σ = 670898832. Its totient is φ = 670898830.

The previous prime is 670898827. The next prime is 670898903. The reversal of 670898831 is 138898076.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670898831 - 2² = 670898827 is a prime.

It is a super-2 number, since 2×670898831² = 900210482874333122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 670898831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670898231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335449415 + 335449416.

It is an arithmetic number, because the mean of its divisors is an integer number (335449416).

Almost surely, 2^670898831 is an apocalyptic number.

670898831 is a deficient number, since it is larger than the sum of its proper divisors (1).

670898831 is an equidigital number, since it uses as much as digits as its factorization.

670898831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 670898831 is about 25901.7148274009. The cubic root of 670898831 is about 875.4251347948.

The spelling of 670898831 in words is "six hundred seventy million, eight hundred ninety-eight thousand, eight hundred thirty-one".