691713148 has 12 divisors (see below), whose sum is σ = 1383426352. Its totient is φ = 296448480.

The previous prime is 691713097. The next prime is 691713149. The reversal of 691713148 is 841317196.

691713148 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 691713148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691713149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12351993 + ... + 12352048.

Almost surely, 2^691713148 is an apocalyptic number.

It is an amenable number.

691713148 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

691713148 is a wasteful number, since it uses less digits than its factorization.

691713148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24704052 (or 24704050 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 691713148 is about 26300.4400723638. The cubic root of 691713148 is about 884.3863080259.

The spelling of 691713148 in words is "six hundred ninety-one million, seven hundred thirteen thousand, one hundred forty-eight".