68531736 has 64 divisors (see below), whose sum is σ = 210873600. Its totient is φ = 18073728.

The previous prime is 68531713. The next prime is 68531737. The reversal of 68531736 is 63713586.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 68531694 and 68531703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68531737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13506 + ... + 17873.

It is an arithmetic number, because the mean of its divisors is an integer number (3294900).

Almost surely, 2^68531736 is an apocalyptic number.

It is an amenable number.

68531736 is an abundant number, since it is smaller than the sum of its proper divisors (142341864).

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

68531736 is a wasteful number, since it uses less digits than its factorization.

68531736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31408 (or 31404 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 68531736 is about 8278.3896984861. The cubic root of 68531736 is about 409.2266524704.

The spelling of 68531736 in words is "sixty-eight million, five hundred thirty-one thousand, seven hundred thirty-six".