785971667 has 4 divisors (see below), whose sum is σ = 846431040. Its totient is φ = 725512296.

The previous prime is 785971661. The next prime is 785971691. The reversal of 785971667 is 766179587.

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 785971667 - 2⁸ = 785971411 is a prime.

It is a super-2 number, since 2×785971667² = 1235502922653517778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (785971661) 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, 30229667 + ... + 30229692.

It is an arithmetic number, because the mean of its divisors is an integer number (211607760).

Almost surely, 2^785971667 is an apocalyptic number.

785971667 is a deficient number, since it is larger than the sum of its proper divisors (60459373).

785971667 is a wasteful number, since it uses less digits than its factorization.

785971667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60459372.

The product of its digits is 4445280, while the sum is 56.

The square root of 785971667 is about 28035.1862308778. The cubic root of 785971667 is about 922.8595913560.

The spelling of 785971667 in words is "seven hundred eighty-five million, nine hundred seventy-one thousand, six hundred sixty-seven".