691354 has 8 divisors (see below), whose sum is σ = 1061280. Its totient is φ = 337596.

The previous prime is 691349. The next prime is 691363. The reversal of 691354 is 453196.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3934 + ... + 4105.

It is an arithmetic number, because the mean of its divisors is an integer number (132660).

2⁶⁹¹³⁵⁴ is an apocalyptic number.

691354 is a deficient number, since it is larger than the sum of its proper divisors (369926).

691354 is a wasteful number, since it uses less digits than its factorization.

691354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084.

The product of its digits is 3240, while the sum is 28.

The square root of 691354 is about 831.4769990806. The cubic root of 691354 is about 88.4233219248.

The spelling of 691354 in words is "six hundred ninety-one thousand, three hundred fifty-four".