36661980 has 24 divisors (see below), whose sum is σ = 102653712. Its totient is φ = 9776512.

The previous prime is 36661973. The next prime is 36661981. The reversal of 36661980 is 8916663.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36661981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305457 + ... + 305576.

It is an arithmetic number, because the mean of its divisors is an integer number (4277238).

Almost surely, 2^36661980 is an apocalyptic number.

36661980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36661980 is an abundant number, since it is smaller than the sum of its proper divisors (65991732).

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

36661980 is a wasteful number, since it uses less digits than its factorization.

36661980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611045 (or 611043 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 36661980 is about 6054.9137070647. The cubic root of 36661980 is about 332.2043426796.

The spelling of 36661980 in words is "thirty-six million, six hundred sixty-one thousand, nine hundred eighty".