136478680 has 32 divisors (see below), whose sum is σ = 330699600. Its totient is φ = 50391936.

The previous prime is 136478677. The next prime is 136478701. The reversal of 136478680 is 86874631.

136478680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130710 + ... + 131749.

Almost surely, 2^136478680 is an apocalyptic number.

136478680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136478680 is an abundant number, since it is smaller than the sum of its proper divisors (194220920).

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

136478680 is a wasteful number, since it uses less digits than its factorization.

136478680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262483 (or 262479 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 136478680 is about 11682.4089981476. The cubic root of 136478680 is about 514.8589553111.

The spelling of 136478680 in words is "one hundred thirty-six million, four hundred seventy-eight thousand, six hundred eighty".