670370747 has 4 divisors (see below), whose sum is σ = 672791136. Its totient is φ = 667950360.

The previous prime is 670370737. The next prime is 670370759. The reversal of 670370747 is 747073076.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670370747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670370737) 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, 1209779 + ... + 1210332.

It is an arithmetic number, because the mean of its divisors is an integer number (168197784).

Almost surely, 2^670370747 is an apocalyptic number.

670370747 is a deficient number, since it is larger than the sum of its proper divisors (2420389).

670370747 is a wasteful number, since it uses less digits than its factorization.

670370747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420388.

The product of its (nonzero) digits is 172872, while the sum is 41.

The square root of 670370747 is about 25891.5188237384. The cubic root of 670370747 is about 875.1953836338.

The spelling of 670370747 in words is "six hundred seventy million, three hundred seventy thousand, seven hundred forty-seven".