136577620 has 36 divisors (see below), whose sum is σ = 291086460. Its totient is φ = 53822208.

The previous prime is 136577603. The next prime is 136577621. The reversal of 136577620 is 26775631.

It can be written as a sum of positive squares in 6 ways, for example, as 42797764 + 93779856 = 6542^2 + 9684^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 136577620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136577621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 492922 + ... + 493198.

It is an arithmetic number, because the mean of its divisors is an integer number (8085735).

Almost surely, 2^136577620 is an apocalyptic number.

136577620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136577620 is an abundant number, since it is smaller than the sum of its proper divisors (154508840).

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

136577620 is an equidigital number, since it uses as much as digits as its factorization.

136577620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 136577620 is about 11686.6428027899. The cubic root of 136577620 is about 514.9833406494.

The spelling of 136577620 in words is "one hundred thirty-six million, five hundred seventy-seven thousand, six hundred twenty".