670152391 has 2 divisors, whose sum is σ = 670152392. Its totient is φ = 670152390.

The previous prime is 670152361. The next prime is 670152397. The reversal of 670152391 is 193251076.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670152391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670152397) 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, 335076195 + 335076196.

It is an arithmetic number, because the mean of its divisors is an integer number (335076196).

Almost surely, 2^670152391 is an apocalyptic number.

670152391 is a deficient number, since it is larger than the sum of its proper divisors (1).

670152391 is an equidigital number, since it uses as much as digits as its factorization.

670152391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 670152391 is about 25887.3017327029. The cubic root of 670152391 is about 875.1003491985.

The spelling of 670152391 in words is "six hundred seventy million, one hundred fifty-two thousand, three hundred ninety-one".