691357416 has 32 divisors (see below), whose sum is σ = 1770552000. Its totient is φ = 224831360.

The previous prime is 691357399. The next prime is 691357417. The reversal of 691357416 is 614753196.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (691357417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350316 + ... + 352283.

It is an arithmetic number, because the mean of its divisors is an integer number (55329750).

Almost surely, 2^691357416 is an apocalyptic number.

It is an amenable number.

691357416 is an abundant number, since it is smaller than the sum of its proper divisors (1079194584).

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

691357416 is a wasteful number, since it uses less digits than its factorization.

691357416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702649 (or 702645 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 691357416 is about 26293.6763500276. The cubic root of 691357416 is about 884.2346755861.

The spelling of 691357416 in words is "six hundred ninety-one million, three hundred fifty-seven thousand, four hundred sixteen".