136763478 has 80 divisors (see below), whose sum is σ = 324870480. Its totient is φ = 42928704.

The previous prime is 136763461. The next prime is 136763509. The reversal of 136763478 is 874367631.

136763478 is a `hidden beast` number, since 1 + 3 + 6 + 7 + 634 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 201676 + ... + 202352.

It is an arithmetic number, because the mean of its divisors is an integer number (4060881).

Almost surely, 2^136763478 is an apocalyptic number.

136763478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136763478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162435240).

136763478 is an abundant number, since it is smaller than the sum of its proper divisors (188107002).

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

136763478 is a wasteful number, since it uses less digits than its factorization.

136763478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 754 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 136763478 is about 11694.5918269942. The cubic root of 136763478 is about 515.2168352000.

The spelling of 136763478 in words is "one hundred thirty-six million, seven hundred sixty-three thousand, four hundred seventy-eight".