996747181 has 16 divisors (see below), whose sum is σ = 1055954944. Its totient is φ = 939605184.

The previous prime is 996747173. The next prime is 996747211. The reversal of 996747181 is 181747699.

It is a cyclic number.

It is not a de Polignac number, because 996747181 - 2³ = 996747173 is a prime.

It is a super-2 number, since 2×996747181² = 1987009885662893522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996747151) 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, 199591 + ... + 204523.

It is an arithmetic number, because the mean of its divisors is an integer number (65997184).

Almost surely, 2^996747181 is an apocalyptic number.

It is an amenable number.

996747181 is a deficient number, since it is larger than the sum of its proper divisors (59207763).

996747181 is a wasteful number, since it uses less digits than its factorization.

996747181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140.

The product of its digits is 762048, while the sum is 52.

The square root of 996747181 is about 31571.3031248316. The cubic root of 996747181 is about 998.9145492229.

The spelling of 996747181 in words is "nine hundred ninety-six million, seven hundred forty-seven thousand, one hundred eighty-one".