136618772 has 12 divisors (see below), whose sum is σ = 243002676. Its totient is φ = 67189440.

The previous prime is 136618771. The next prime is 136618793. The reversal of 136618772 is 277816631.

It can be written as a sum of positive squares in 2 ways, for example, as 49084036 + 87534736 = 7006^2 + 9356^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136618771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279713 + ... + 280200.

It is an arithmetic number, because the mean of its divisors is an integer number (20250223).

Almost surely, 2^136618772 is an apocalyptic number.

It is an amenable number.

136618772 is a deficient number, since it is larger than the sum of its proper divisors (106383904).

136618772 is a wasteful number, since it uses less digits than its factorization.

136618772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559978 (or 559976 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 136618772 is about 11688.4033126856. The cubic root of 136618772 is about 515.0350584108.

The spelling of 136618772 in words is "one hundred thirty-six million, six hundred eighteen thousand, seven hundred seventy-two".