990680674 has 8 divisors (see below), whose sum is σ = 1491310188. Its totient is φ = 493577280.

The previous prime is 990680657. The next prime is 990680689. The reversal of 990680674 is 476086099.

It can be written as a sum of positive squares in 2 ways, for example, as 834805449 + 155875225 = 28893^2 + 12485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880827 + ... + 881950.

Almost surely, 2^990680674 is an apocalyptic number.

990680674 is a deficient number, since it is larger than the sum of its proper divisors (500629514).

990680674 is a wasteful number, since it uses less digits than its factorization.

990680674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763060.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 990680674 is about 31475.0802064109. The cubic root of 990680674 is about 996.8838577437.

The spelling of 990680674 in words is "nine hundred ninety million, six hundred eighty thousand, six hundred seventy-four".