670922691 has 4 divisors (see below), whose sum is σ = 894563592. Its totient is φ = 447281792.

The previous prime is 670922687. The next prime is 670922711. The reversal of 670922691 is 196229076.

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

It is a cyclic number.

It is not a de Polignac number, because 670922691 - 2² = 670922687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670922641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111820446 + ... + 111820451.

It is an arithmetic number, because the mean of its divisors is an integer number (223640898).

Almost surely, 2^670922691 is an apocalyptic number.

670922691 is a deficient number, since it is larger than the sum of its proper divisors (223640901).

670922691 is a wasteful number, since it uses less digits than its factorization.

670922691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223640900.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 670922691 is about 25902.1754105712. The cubic root of 670922691 is about 875.4355126119.

The spelling of 670922691 in words is "six hundred seventy million, nine hundred twenty-two thousand, six hundred ninety-one".