670591499 has 2 divisors, whose sum is σ = 670591500. Its totient is φ = 670591498.

The previous prime is 670591477. The next prime is 670591501. The reversal of 670591499 is 994195076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670591499 - 2²⁴ = 653814283 is a prime.

Together with 670591501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670591799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335295749 + 335295750.

It is an arithmetic number, because the mean of its divisors is an integer number (335295750).

Almost surely, 2^670591499 is an apocalyptic number.

670591499 is a deficient number, since it is larger than the sum of its proper divisors (1).

670591499 is an equidigital number, since it uses as much as digits as its factorization.

670591499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 670591499 is about 25895.7814904281. The cubic root of 670591499 is about 875.2914398977.

The spelling of 670591499 in words is "six hundred seventy million, five hundred ninety-one thousand, four hundred ninety-nine".