855931667 has 2 divisors, whose sum is σ = 855931668. Its totient is φ = 855931666.

The previous prime is 855931651. The next prime is 855931753. The reversal of 855931667 is 766139558.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855931667 - 2⁴ = 855931651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (855931567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427965833 + 427965834.

It is an arithmetic number, because the mean of its divisors is an integer number (427965834).

Almost surely, 2^855931667 is an apocalyptic number.

855931667 is a deficient number, since it is larger than the sum of its proper divisors (1).

855931667 is an equidigital number, since it uses as much as digits as its factorization.

855931667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 50.

The square root of 855931667 is about 29256.3098664203. The cubic root of 855931667 is about 949.4666136006.

The spelling of 855931667 in words is "eight hundred fifty-five million, nine hundred thirty-one thousand, six hundred sixty-seven".