990674497 has 16 divisors (see below), whose sum is σ = 1056107520. Its totient is φ = 926629200.

The previous prime is 990674479. The next prime is 990674521. The reversal of 990674497 is 794476099.

It is a happy number.

990674497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-990674497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990678497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 960372 + ... + 961402.

It is an arithmetic number, because the mean of its divisors is an integer number (66006720).

Almost surely, 2^990674497 is an apocalyptic number.

It is an amenable number.

990674497 is a deficient number, since it is larger than the sum of its proper divisors (65433023).

990674497 is a wasteful number, since it uses less digits than its factorization.

990674497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 990674497 is about 31474.9820810116. The cubic root of 990674497 is about 996.8817858469.

The spelling of 990674497 in words is "nine hundred ninety million, six hundred seventy-four thousand, four hundred ninety-seven".