996811251 has 32 divisors (see below), whose sum is σ = 1382946048. Its totient is φ = 638238720.

The previous prime is 996811241. The next prime is 996811261. The reversal of 996811251 is 152118699.

It is an interprime number because it is at equal distance from previous prime (996811241) and next prime (996811261).

It is not a de Polignac number, because 996811251 - 2¹⁴ = 996794867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (996811241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3547231 + ... + 3547511.

It is an arithmetic number, because the mean of its divisors is an integer number (43217064).

Almost surely, 2^996811251 is an apocalyptic number.

996811251 is a deficient number, since it is larger than the sum of its proper divisors (386134797).

996811251 is a wasteful number, since it uses less digits than its factorization.

996811251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its digits is 38880, while the sum is 42.

The square root of 996811251 is about 31572.3177958160. The cubic root of 996811251 is about 998.9359518698.

The spelling of 996811251 in words is "nine hundred ninety-six million, eight hundred eleven thousand, two hundred fifty-one".