670955651 has 2 divisors, whose sum is σ = 670955652. Its totient is φ = 670955650.

The previous prime is 670955647. The next prime is 670955657. The reversal of 670955651 is 156559076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670955651 - 2² = 670955647 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670955657) 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, 335477825 + 335477826.

It is an arithmetic number, because the mean of its divisors is an integer number (335477826).

Almost surely, 2^670955651 is an apocalyptic number.

670955651 is a deficient number, since it is larger than the sum of its proper divisors (1).

670955651 is an equidigital number, since it uses as much as digits as its factorization.

670955651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 670955651 is about 25902.8116427542. The cubic root of 670955651 is about 875.4498480350.

The spelling of 670955651 in words is "six hundred seventy million, nine hundred fifty-five thousand, six hundred fifty-one".