691411244 has 6 divisors (see below), whose sum is σ = 1209969684. Its totient is φ = 345705620.

The previous prime is 691411223. The next prime is 691411283. The reversal of 691411244 is 442114196.

It is a self number, because there is not a number n which added to its sum of digits gives 691411244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86426402 + ... + 86426409.

It is an arithmetic number, because the mean of its divisors is an integer number (201661614).

Almost surely, 2^691411244 is an apocalyptic number.

It is an amenable number.

691411244 is a deficient number, since it is larger than the sum of its proper divisors (518558440).

691411244 is a wasteful number, since it uses less digits than its factorization.

691411244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172852815 (or 172852813 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 691411244 is about 26294.6999222277. The cubic root of 691411244 is about 884.2576233638.

The spelling of 691411244 in words is "six hundred ninety-one million, four hundred eleven thousand, two hundred forty-four".