670423641 has 16 divisors (see below), whose sum is σ = 908697600. Its totient is φ = 439571088.

The previous prime is 670423603. The next prime is 670423643. The reversal of 670423641 is 146324076.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-670423641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670423643) 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 15 ways as a sum of consecutive naturals, for example, 142200 + ... + 146838.

It is an arithmetic number, because the mean of its divisors is an integer number (56793600).

Almost surely, 2^670423641 is an apocalyptic number.

It is an amenable number.

670423641 is a deficient number, since it is larger than the sum of its proper divisors (238273959).

670423641 is a wasteful number, since it uses less digits than its factorization.

670423641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 670423641 is about 25892.5402577654. The cubic root of 670423641 is about 875.2184014277.

The spelling of 670423641 in words is "six hundred seventy million, four hundred twenty-three thousand, six hundred forty-one".