670540907 has 8 divisors (see below), whose sum is σ = 676599696. Its totient is φ = 664507552.

The previous prime is 670540901. The next prime is 670540931. The reversal of 670540907 is 709045076.

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

It is a cyclic number.

It is not a de Polignac number, because 670540907 - 2¹⁶ = 670475371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670540901) 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 7 ways as a sum of consecutive naturals, for example, 48728 + ... + 60954.

It is an arithmetic number, because the mean of its divisors is an integer number (84574962).

Almost surely, 2^670540907 is an apocalyptic number.

670540907 is a deficient number, since it is larger than the sum of its proper divisors (6058789).

670540907 is a wasteful number, since it uses less digits than its factorization.

670540907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12717.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 670540907 is about 25894.8046333623. The cubic root of 670540907 is about 875.2694275607.

The spelling of 670540907 in words is "six hundred seventy million, five hundred forty thousand, nine hundred seven".