68989536 has 384 divisors, whose sum is σ = 269982720. Its totient is φ = 16588800.

The previous prime is 68989483. The next prime is 68989541. The reversal of 68989536 is 63598986.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1130946 + ... + 1131006.

It is an arithmetic number, because the mean of its divisors is an integer number (703080).

Almost surely, 2^68989536 is an apocalyptic number.

68989536 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68989536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134991360).

68989536 is an abundant number, since it is smaller than the sum of its proper divisors (200993184).

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

68989536 is a wasteful number, since it uses less digits than its factorization.

68989536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 101 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 68989536 is about 8305.9939802531. The cubic root of 68989536 is about 410.1358582091.

The spelling of 68989536 in words is "sixty-eight million, nine hundred eighty-nine thousand, five hundred thirty-six".