869496643 has 2 divisors, whose sum is σ = 869496644. Its totient is φ = 869496642.

The previous prime is 869496631. The next prime is 869496697. The reversal of 869496643 is 346694968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 869496643 - 2⁵ = 869496611 is a prime.

It is not a weakly prime, because it can be changed into another prime (869496613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434748321 + 434748322.

It is an arithmetic number, because the mean of its divisors is an integer number (434748322).

Almost surely, 2^869496643 is an apocalyptic number.

869496643 is a deficient number, since it is larger than the sum of its proper divisors (1).

869496643 is an equidigital number, since it uses as much as digits as its factorization.

869496643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 55.

The square root of 869496643 is about 29487.2284726795. The cubic root of 869496643 is about 954.4561262750.

The spelling of 869496643 in words is "eight hundred sixty-nine million, four hundred ninety-six thousand, six hundred forty-three".