990687463 has 2 divisors, whose sum is σ = 990687464. Its totient is φ = 990687462.

The previous prime is 990687443. The next prime is 990687497. The reversal of 990687463 is 364786099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 990687463 - 2²⁹ = 453816551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990687463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990687403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495343731 + 495343732.

It is an arithmetic number, because the mean of its divisors is an integer number (495343732).

Almost surely, 2^990687463 is an apocalyptic number.

990687463 is a deficient number, since it is larger than the sum of its proper divisors (1).

990687463 is an equidigital number, since it uses as much as digits as its factorization.

990687463 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 990687463 is about 31475.1880534493. The cubic root of 990687463 is about 996.8861349084.

The spelling of 990687463 in words is "nine hundred ninety million, six hundred eighty-seven thousand, four hundred sixty-three".