136553680 has 40 divisors (see below), whose sum is σ = 326075112. Its totient is φ = 53144064.

The previous prime is 136553647. The next prime is 136553687. The reversal of 136553680 is 86355631.

It can be written as a sum of positive squares in 4 ways, for example, as 42928704 + 93624976 = 6552^2 + 9676^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136553687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20107 + ... + 26026.

Almost surely, 2^136553680 is an apocalyptic number.

136553680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136553680 is an abundant number, since it is smaller than the sum of its proper divisors (189521432).

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

136553680 is a wasteful number, since it uses less digits than its factorization.

136553680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46183 (or 46177 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 136553680 is about 11685.6185116578. The cubic root of 136553680 is about 514.9532492831.

The spelling of 136553680 in words is "one hundred thirty-six million, five hundred fifty-three thousand, six hundred eighty".