691134 has 16 divisors (see below), whose sum is σ = 1394688. Its totient is φ = 228312.

The previous prime is 691129. The next prime is 691147. The reversal of 691134 is 431196.

It is a congruent number.

It is an unprimeable number.

691134 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309 + ... + 1215.

It is an arithmetic number, because the mean of its divisors is an integer number (87168).

2⁶⁹¹¹³⁴ is an apocalyptic number.

691134 is an abundant number, since it is smaller than the sum of its proper divisors (703554).

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

691134 is a wasteful number, since it uses less digits than its factorization.

691134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039.

The product of its digits is 648, while the sum is 24.

The square root of 691134 is about 831.3446938545. The cubic root of 691134 is about 88.4139416871.

The spelling of 691134 in words is "six hundred ninety-one thousand, one hundred thirty-four".