136437648 has 80 divisors (see below), whose sum is σ = 383368320. Its totient is φ = 41637888.

The previous prime is 136437643. The next prime is 136437659. The reversal of 136437648 is 846734631.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (136437643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27933 + ... + 32451.

It is an arithmetic number, because the mean of its divisors is an integer number (4792104).

Almost surely, 2^136437648 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 136437648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191684160).

136437648 is an abundant number, since it is smaller than the sum of its proper divisors (246930672).

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

136437648 is a wasteful number, since it uses less digits than its factorization.

136437648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584 (or 4578 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 136437648 is about 11680.6527214878. The cubic root of 136437648 is about 514.8073530874.

The spelling of 136437648 in words is "one hundred thirty-six million, four hundred thirty-seven thousand, six hundred forty-eight".