996731 has 4 divisors (see below), whose sum is σ = 1006512. Its totient is φ = 986952.

The previous prime is 996703. The next prime is 996739. The reversal of 996731 is 137699.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996731 is a prime.

It is a super-2 number, since 2×996731² = 1986945372722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 996691 and 996700.

It is not an unprimeable number, because it can be changed into a prime (996739) 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, 4736 + ... + 4941.

It is an arithmetic number, because the mean of its divisors is an integer number (251628).

2⁹⁹⁶⁷³¹ is an apocalyptic number.

996731 is a deficient number, since it is larger than the sum of its proper divisors (9781).

996731 is a wasteful number, since it uses less digits than its factorization.

996731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9780.

The product of its digits is 10206, while the sum is 35.

The square root of 996731 is about 998.3641620170. The cubic root of 996731 is about 99.8909143799.

The spelling of 996731 in words is "nine hundred ninety-six thousand, seven hundred thirty-one".