996738751 has 4 divisors (see below), whose sum is σ = 996902712. Its totient is φ = 996574792.

The previous prime is 996738749. The next prime is 996738793. The reversal of 996738751 is 157837699.

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

It is a cyclic number.

It is not a de Polignac number, because 996738751 - 2¹ = 996738749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 996738692 and 996738701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996738731) 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, 72496 + ... + 85141.

It is an arithmetic number, because the mean of its divisors is an integer number (249225678).

Almost surely, 2^996738751 is an apocalyptic number.

996738751 is the 16876-th centered heptagonal number.

996738751 is a deficient number, since it is larger than the sum of its proper divisors (163961).

996738751 is a wasteful number, since it uses less digits than its factorization.

996738751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163960.

The product of its digits is 2857680, while the sum is 55.

The square root of 996738751 is about 31571.1696172315. The cubic root of 996738751 is about 998.9117331048.

The spelling of 996738751 in words is "nine hundred ninety-six million, seven hundred thirty-eight thousand, seven hundred fifty-one".