670965399 has 12 divisors (see below), whose sum is σ = 1043724136. Its totient is φ = 412901712.

The previous prime is 670965391. The next prime is 670965433. The reversal of 670965399 is 993569076.

It is not a de Polignac number, because 670965399 - 2³ = 670965391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670965391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2867257 + ... + 2867490.

Almost surely, 2^670965399 is an apocalyptic number.

670965399 is a deficient number, since it is larger than the sum of its proper divisors (372758737).

670965399 is a wasteful number, since it uses less digits than its factorization.

670965399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5734766 (or 5734763 counting only the distinct ones).

The product of its (nonzero) digits is 2755620, while the sum is 54.

The square root of 670965399 is about 25902.9998069722. Note that the first 3 decimals coincide. The cubic root of 670965399 is about 875.4540876812.

The spelling of 670965399 in words is "six hundred seventy million, nine hundred sixty-five thousand, three hundred ninety-nine".