68173632 has 84 divisors (see below), whose sum is σ = 198278496. Its totient is φ = 22391040.

The previous prime is 68173607. The next prime is 68173649. The reversal of 68173632 is 23637186.

It is a happy number.

68173632 is a `hidden beast` number, since 6 + 8 + 17 + 3 + 632 = 666.

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 11 ways as a sum of consecutive naturals, for example, 40063 + ... + 41729.

Almost surely, 2^68173632 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 68173632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99139248).

68173632 is an abundant number, since it is smaller than the sum of its proper divisors (130104864).

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

68173632 is a wasteful number, since it uses less digits than its factorization.

68173632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756 (or 1743 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 68173632 is about 8256.7325256423. The cubic root of 68173632 is about 408.5126197931.

The spelling of 68173632 in words is "sixty-eight million, one hundred seventy-three thousand, six hundred thirty-two".