68651136 has 96 divisors (see below), whose sum is σ = 206219520. Its totient is φ = 21880320.

The previous prime is 68651131. The next prime is 68651137. The reversal of 68651136 is 63115686.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a self number, because there is not a number n which added to its sum of digits gives 68651136.

It is not an unprimeable number, because it can be changed into a prime (68651131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25201 + ... + 27791.

It is an arithmetic number, because the mean of its divisors is an integer number (2148120).

Almost surely, 2^68651136 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 68651136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103109760).

68651136 is an abundant number, since it is smaller than the sum of its proper divisors (137568384).

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

68651136 is a wasteful number, since it uses less digits than its factorization.

68651136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634 (or 2619 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 68651136 is about 8285.5981075599. The cubic root of 68651136 is about 409.4641741212.

It can be divided in two parts, 6865 and 1136, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 68651136 in words is "sixty-eight million, six hundred fifty-one thousand, one hundred thirty-six".