990061776 has 120 divisors (see below), whose sum is σ = 3200580864. Its totient is φ = 282362880.

The previous prime is 990061757. The next prime is 990061811. The reversal of 990061776 is 677160099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8545 + ... + 45311.

Almost surely, 2^990061776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990061776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600290432).

990061776 is an abundant number, since it is smaller than the sum of its proper divisors (2210519088).

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

990061776 is a wasteful number, since it uses less digits than its factorization.

990061776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36809 (or 36800 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 990061776 is about 31465.2471148726. The cubic root of 990061776 is about 996.6762234157.

The spelling of 990061776 in words is "nine hundred ninety million, sixty-one thousand, seven hundred seventy-six".