9991037662 has 8 divisors (see below), whose sum is σ = 14994589176. Its totient is φ = 4992841272.

The previous prime is 9991037657. The next prime is 9991037677. The reversal of 9991037662 is 2667301999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1334113 + ... + 1341580.

It is an arithmetic number, because the mean of its divisors is an integer number (1874323647).

Almost surely, 2^9991037662 is an apocalyptic number.

9991037662 is a deficient number, since it is larger than the sum of its proper divisors (5003551514).

9991037662 is a wasteful number, since it uses less digits than its factorization.

9991037662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677562.

The product of its (nonzero) digits is 1102248, while the sum is 52.

The square root of 9991037662 is about 99955.1782650604. The cubic root of 9991037662 is about 2153.7908719267.

The spelling of 9991037662 in words is "nine billion, nine hundred ninety-one million, thirty-seven thousand, six hundred sixty-two".