670240664 has 16 divisors (see below), whose sum is σ = 1275459000. Its totient is φ = 330118272.

The previous prime is 670240651. The next prime is 670240679. The reversal of 670240664 is 466042076.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624689 + ... + 625760.

Almost surely, 2^670240664 is an apocalyptic number.

It is an amenable number.

670240664 is a deficient number, since it is larger than the sum of its proper divisors (605218336).

670240664 is a wasteful number, since it uses less digits than its factorization.

670240664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250522 (or 1250518 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 670240664 is about 25889.0066244342. The cubic root of 670240664 is about 875.1387704804.

The spelling of 670240664 in words is "six hundred seventy million, two hundred forty thousand, six hundred sixty-four".