3654820 has 24 divisors (see below), whose sum is σ = 8266104. Its totient is φ = 1349376.

The previous prime is 3654809. The next prime is 3654829. The reversal of 3654820 is 284563.

3654820 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 4 ways, for example, as 112896 + 3541924 = 336^2 + 1882^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3654829) 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 7 ways as a sum of consecutive naturals, for example, 6769 + ... + 7288.

It is an arithmetic number, because the mean of its divisors is an integer number (344421).

Almost surely, 2^3654820 is an apocalyptic number.

It is an amenable number.

3654820 is an abundant number, since it is smaller than the sum of its proper divisors (4611284).

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

3654820 is a wasteful number, since it uses less digits than its factorization.

3654820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14079 (or 14077 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 3654820 is about 1911.7583529306. The cubic root of 3654820 is about 154.0359167365.

The spelling of 3654820 in words is "three million, six hundred fifty-four thousand, eight hundred twenty".