670734654 has 8 divisors (see below), whose sum is σ = 1341469320. Its totient is φ = 223578216.

The previous prime is 670734653. The next prime is 670734679. The reversal of 670734654 is 456437076.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

670734654 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670734653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55894549 + ... + 55894560.

It is an arithmetic number, because the mean of its divisors is an integer number (167683665).

Almost surely, 2^670734654 is an apocalyptic number.

670734654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670734654 is a wasteful number, since it uses less digits than its factorization.

670734654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111789114.

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 670734654 is about 25898.5454031689. The cubic root of 670734654 is about 875.3537199549.

The spelling of 670734654 in words is "six hundred seventy million, seven hundred thirty-four thousand, six hundred fifty-four".