68691132 has 96 divisors (see below), whose sum is σ = 184396800. Its totient is φ = 22104576.

The previous prime is 68691109. The next prime is 68691149. The reversal of 68691132 is 23119686.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708108 + ... + 708204.

It is an arithmetic number, because the mean of its divisors is an integer number (1920800).

Almost surely, 2^68691132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68691132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92198400).

68691132 is an abundant number, since it is smaller than the sum of its proper divisors (115705668).

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

68691132 is a wasteful number, since it uses less digits than its factorization.

68691132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 264 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 68691132 is about 8288.0113416911. The cubic root of 68691132 is about 409.5436763247.

It can be divided in two parts, 6869 and 1132, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 68691132 in words is "sixty-eight million, six hundred ninety-one thousand, one hundred thirty-two".