899677631 has 2 divisors, whose sum is σ = 899677632. Its totient is φ = 899677630.

The previous prime is 899677627. The next prime is 899677651. The reversal of 899677631 is 136776998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 899677631 - 2² = 899677627 is a prime.

It is a super-2 number, since 2×899677631² = 1618839679443544322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899677601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449838815 + 449838816.

It is an arithmetic number, because the mean of its divisors is an integer number (449838816).

Almost surely, 2^899677631 is an apocalyptic number.

899677631 is a deficient number, since it is larger than the sum of its proper divisors (1).

899677631 is an equidigital number, since it uses as much as digits as its factorization.

899677631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 56.

The square root of 899677631 is about 29994.6267021278. The cubic root of 899677631 is about 965.3740953404.

The spelling of 899677631 in words is "eight hundred ninety-nine million, six hundred seventy-seven thousand, six hundred thirty-one".