990663582 has 16 divisors (see below), whose sum is σ = 2008469520. Its totient is φ = 325697472.

The previous prime is 990663551. The next prime is 990663589. The reversal of 990663582 is 285366099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990663589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130457 + ... + 1131332.

It is an arithmetic number, because the mean of its divisors is an integer number (125529345).

Almost surely, 2^990663582 is an apocalyptic number.

990663582 is an abundant number, since it is smaller than the sum of its proper divisors (1017805938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990663582 is a wasteful number, since it uses less digits than its factorization.

990663582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261867.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 990663582 is about 31474.8086888546. The cubic root of 990663582 is about 996.8781247033.

The spelling of 990663582 in words is "nine hundred ninety million, six hundred sixty-three thousand, five hundred eighty-two".