36687780 has 36 divisors (see below), whose sum is σ = 111286812. Its totient is φ = 9783360.

The previous prime is 36687773. The next prime is 36687797. The reversal of 36687780 is 8778663.

It can be written as a sum of positive squares in 2 ways, for example, as 14333796 + 22353984 = 3786^2 + 4728^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101731 + ... + 102090.

Almost surely, 2^36687780 is an apocalyptic number.

36687780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36687780 is an abundant number, since it is smaller than the sum of its proper divisors (74599032).

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

36687780 is a wasteful number, since it uses less digits than its factorization.

36687780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203836 (or 203831 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 36687780 is about 6057.0438334224. The cubic root of 36687780 is about 332.2822513861.

The spelling of 36687780 in words is "thirty-six million, six hundred eighty-seven thousand, seven hundred eighty".