996403687 has 2 divisors, whose sum is σ = 996403688. Its totient is φ = 996403686.

The previous prime is 996403669. The next prime is 996403693. The reversal of 996403687 is 786304699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 996403687 - 2⁷ = 996403559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996403627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498201843 + 498201844.

It is an arithmetic number, because the mean of its divisors is an integer number (498201844).

Almost surely, 2^996403687 is an apocalyptic number.

996403687 is a deficient number, since it is larger than the sum of its proper divisors (1).

996403687 is an equidigital number, since it uses as much as digits as its factorization.

996403687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 996403687 is about 31565.8626842353. The cubic root of 996403687 is about 998.7997890700.

The spelling of 996403687 in words is "nine hundred ninety-six million, four hundred three thousand, six hundred eighty-seven".