670369697 has 4 divisors (see below), whose sum is σ = 673151556. Its totient is φ = 667587840.

The previous prime is 670369673. The next prime is 670369757. The reversal of 670369697 is 796963076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 274200481 + 396169216 = 16559^2 + 19904^2 .

It is a cyclic number.

It is not a de Polignac number, because 670369697 - 2²⁸ = 401934241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670369607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390568 + ... + 1391049.

It is an arithmetic number, because the mean of its divisors is an integer number (168287889).

Almost surely, 2^670369697 is an apocalyptic number.

It is an amenable number.

670369697 is a deficient number, since it is larger than the sum of its proper divisors (2781859).

670369697 is a wasteful number, since it uses less digits than its factorization.

670369697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781858.

The product of its (nonzero) digits is 2571912, while the sum is 53.

The square root of 670369697 is about 25891.4985468203. The cubic root of 670369697 is about 875.1949266947.

The spelling of 670369697 in words is "six hundred seventy million, three hundred sixty-nine thousand, six hundred ninety-seven".