990737 has 4 divisors (see below), whose sum is σ = 1080816. Its totient is φ = 900660.

The previous prime is 990733. The next prime is 990761. The reversal of 990737 is 737099.

990737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 990737 - 2² = 990733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 990697 and 990706.

It is not an unprimeable number, because it can be changed into a prime (990733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45023 + ... + 45044.

It is an arithmetic number, because the mean of its divisors is an integer number (270204).

2⁹⁹⁰⁷³⁷ is an apocalyptic number.

It is an amenable number.

990737 is a deficient number, since it is larger than the sum of its proper divisors (90079).

990737 is a wasteful number, since it uses less digits than its factorization.

990737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90078.

The product of its (nonzero) digits is 11907, while the sum is 35.

The square root of 990737 is about 995.3577246397. The cubic root of 990737 is about 99.6902750281.

The spelling of 990737 in words is "nine hundred ninety thousand, seven hundred thirty-seven".