691364 has 12 divisors (see below), whose sum is σ = 1215984. Its totient is φ = 343944.

The previous prime is 691363. The next prime is 691381. The reversal of 691364 is 463196.

It is not an unprimeable number, because it can be changed into a prime (691363) 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, 947 + ... + 1509.

It is an arithmetic number, because the mean of its divisors is an integer number (101332).

2⁶⁹¹³⁶⁴ is an apocalyptic number.

It is an amenable number.

691364 is a deficient number, since it is larger than the sum of its proper divisors (524620).

691364 is a wasteful number, since it uses less digits than its factorization.

691364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 872 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 691364 is about 831.4830124543. The cubic root of 691364 is about 88.4237482519.

The spelling of 691364 in words is "six hundred ninety-one thousand, three hundred sixty-four".