136477780 has 12 divisors (see below), whose sum is σ = 286603380. Its totient is φ = 54591104.

The previous prime is 136477769. The next prime is 136477787. The reversal of 136477780 is 87774631.

It can be written as a sum of positive squares in 2 ways, for example, as 22543504 + 113934276 = 4748^2 + 10674^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136477787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3411925 + ... + 3411964.

It is an arithmetic number, because the mean of its divisors is an integer number (23883615).

Almost surely, 2^136477780 is an apocalyptic number.

136477780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136477780 is an abundant number, since it is smaller than the sum of its proper divisors (150125600).

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

136477780 is a wasteful number, since it uses less digits than its factorization.

136477780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823898 (or 6823896 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 136477780 is about 11682.3704786315. The cubic root of 136477780 is about 514.8578235737.

The spelling of 136477780 in words is "one hundred thirty-six million, four hundred seventy-seven thousand, seven hundred eighty".