670984331 has 2 divisors, whose sum is σ = 670984332. Its totient is φ = 670984330.

The previous prime is 670984291. The next prime is 670984409. The reversal of 670984331 is 133489076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670984331 - 2¹⁸ = 670722187 is a prime.

It is a super-2 number, since 2×670984331² = 900439944895035122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (670984231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335492165 + 335492166.

It is an arithmetic number, because the mean of its divisors is an integer number (335492166).

Almost surely, 2^670984331 is an apocalyptic number.

670984331 is a deficient number, since it is larger than the sum of its proper divisors (1).

670984331 is an equidigital number, since it uses as much as digits as its factorization.

670984331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 670984331 is about 25903.3652446936. The cubic root of 670984331 is about 875.4623215588.

The spelling of 670984331 in words is "six hundred seventy million, nine hundred eighty-four thousand, three hundred thirty-one".