991714572 has 36 divisors (see below), whose sum is σ = 2507869000. Its totient is φ = 330435072.

The previous prime is 991714553. The next prime is 991714573. The reversal of 991714572 is 275417199.

991714572 is a `hidden beast` number, since 9 + 9 + 1 + 71 + 4 + 572 = 666.

991714572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (991714573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122028 + ... + 129900.

Almost surely, 2^991714572 is an apocalyptic number.

It is a pronic number, being equal to 31491×31492.

It is an amenable number.

991714572 is an abundant number, since it is smaller than the sum of its proper divisors (1516154428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

991714572 is a wasteful number, since it uses less digits than its factorization.

991714572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11382 (or 11377 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 991714572 is about 31491.4999960307. The cubic root of 991714572 is about 997.2305277708.

The spelling of 991714572 in words is "nine hundred ninety-one million, seven hundred fourteen thousand, five hundred seventy-two".