366881780 has 18 divisors (see below), whose sum is σ = 770631666. Its totient is φ = 146718448.

The previous prime is 366881759. The next prime is 366881783. The reversal of 366881780 is 87188663.

366881780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 293505424 + 73376356 = 17132^2 + 8566^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366881783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83519 + ... + 87801.

Almost surely, 2^366881780 is an apocalyptic number.

It is an amenable number.

366881780 is an abundant number, since it is smaller than the sum of its proper divisors (403749886).

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

366881780 is an frugal number, since it uses more digits than its factorization.

366881780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8575 (or 4290 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 366881780 is about 19154.1582952632. The cubic root of 366881780 is about 715.8829979535.

The spelling of 366881780 in words is "three hundred sixty-six million, eight hundred eighty-one thousand, seven hundred eighty".