3693780 has 36 divisors (see below), whose sum is σ = 11205012. Its totient is φ = 984960.

The previous prime is 3693779. The next prime is 3693787. The reversal of 3693780 is 873963.

3693780 is digitally balanced in base 2, 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 2 ways, for example, as 1855044 + 1838736 = 1362^2 + 1356^2 .

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 (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3693787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10081 + ... + 10440.

Almost surely, 2^3693780 is an apocalyptic number.

3693780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3693780 is an abundant number, since it is smaller than the sum of its proper divisors (7511232).

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

3693780 is a wasteful number, since it uses less digits than its factorization.

3693780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20536 (or 20531 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3693780 is about 1921.9209140857. The cubic root of 3693780 is about 154.5813189283.

The spelling of 3693780 in words is "three million, six hundred ninety-three thousand, seven hundred eighty".