136770408 has 24 divisors (see below), whose sum is σ = 370420050. Its totient is φ = 45590112.

The previous prime is 136770407. The next prime is 136770421. The reversal of 136770408 is 804077631.

It can be written as a sum of positive squares in only one way, i.e., 133679844 + 3090564 = 11562^2 + 1758^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×136770408² = 37412289008972928, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (136770407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 949723 + ... + 949866.

Almost surely, 2^136770408 is an apocalyptic number.

136770408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136770408 is an abundant number, since it is smaller than the sum of its proper divisors (233649642).

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

136770408 is a wasteful number, since it uses less digits than its factorization.

136770408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899601 (or 1899594 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 136770408 is about 11694.8881140437. Note that the first 3 decimals coincide. The cubic root of 136770408 is about 515.2255373097.

The spelling of 136770408 in words is "one hundred thirty-six million, seven hundred seventy thousand, four hundred eight".