691276152 has 64 divisors (see below), whose sum is σ = 1985195520. Its totient is φ = 196495488.

The previous prime is 691276129. The next prime is 691276163. The reversal of 691276152 is 251672196.

It is a self number, because there is not a number n which added to its sum of digits gives 691276152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22653 + ... + 43539.

It is an arithmetic number, because the mean of its divisors is an integer number (31018680).

Almost surely, 2^691276152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 691276152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992597760).

691276152 is an abundant number, since it is smaller than the sum of its proper divisors (1293919368).

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

691276152 is a wasteful number, since it uses less digits than its factorization.

691276152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21100 (or 21096 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 691276152 is about 26292.1309900890. The cubic root of 691276152 is about 884.2000291256.

The spelling of 691276152 in words is "six hundred ninety-one million, two hundred seventy-six thousand, one hundred fifty-two".