670681995 has 8 divisors (see below), whose sum is σ = 1073091216. Its totient is φ = 357697056.

The previous prime is 670681961. The next prime is 670682003. The reversal of 670681995 is 599186076.

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

It is not a de Polignac number, because 670681995 - 2⁷ = 670681867 is a prime.

It is an unprimeable number.

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, 22356052 + ... + 22356081.

It is an arithmetic number, because the mean of its divisors is an integer number (134136402).

Almost surely, 2^670681995 is an apocalyptic number.

670681995 is a deficient number, since it is larger than the sum of its proper divisors (402409221).

670681995 is a wasteful number, since it uses less digits than its factorization.

670681995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44712141.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 670681995 is about 25897.5287431060. The cubic root of 670681995 is about 875.3308115129.

The spelling of 670681995 in words is "six hundred seventy million, six hundred eighty-one thousand, nine hundred ninety-five".