136968894 has 56 divisors (see below), whose sum is σ = 316489080. Its totient is φ = 44404848.

The previous prime is 136968893. The next prime is 136968899. The reversal of 136968894 is 498869631.

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

It is a self number, because there is not a number n which added to its sum of digits gives 136968894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136968893) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 52677 + ... + 55215.

Almost surely, 2^136968894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136968894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158244540).

136968894 is an abundant number, since it is smaller than the sum of its proper divisors (179520186).

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

136968894 is an equidigital number, since it uses as much as digits as its factorization.

136968894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596 (or 2581 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 136968894 is about 11703.3710528206. The cubic root of 136968894 is about 515.4746546130.

The spelling of 136968894 in words is "one hundred thirty-six million, nine hundred sixty-eight thousand, eight hundred ninety-four".