670965747 has 4 divisors (see below), whose sum is σ = 894621000. Its totient is φ = 447310496.

The previous prime is 670965709. The next prime is 670965751. The reversal of 670965747 is 747569076.

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 670965747 - 2¹⁸ = 670703603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670965747.

It is not an unprimeable number, because it can be changed into a prime (670965787) 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, 111827622 + ... + 111827627.

It is an arithmetic number, because the mean of its divisors is an integer number (223655250).

Almost surely, 2^670965747 is an apocalyptic number.

670965747 is a deficient number, since it is larger than the sum of its proper divisors (223655253).

670965747 is a wasteful number, since it uses less digits than its factorization.

670965747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223655252.

The product of its (nonzero) digits is 2222640, while the sum is 51.

The square root of 670965747 is about 25903.0065243400. The cubic root of 670965747 is about 875.4542390343.

The spelling of 670965747 in words is "six hundred seventy million, nine hundred sixty-five thousand, seven hundred forty-seven".