670697263 has 4 divisors (see below), whose sum is σ = 673084368. Its totient is φ = 668310160.

The previous prime is 670697213. The next prime is 670697303. The reversal of 670697263 is 362796076.

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

It is a cyclic number.

It is not a de Polignac number, because 670697263 - 2²¹ = 668600111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670697213) 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, 1193131 + ... + 1193692.

It is an arithmetic number, because the mean of its divisors is an integer number (168271092).

Almost surely, 2^670697263 is an apocalyptic number.

670697263 is a deficient number, since it is larger than the sum of its proper divisors (2387105).

670697263 is a wasteful number, since it uses less digits than its factorization.

670697263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387104.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 670697263 is about 25897.8235185894. The cubic root of 670697263 is about 875.3374537315.

The spelling of 670697263 in words is "six hundred seventy million, six hundred ninety-seven thousand, two hundred sixty-three".