3736821 has 16 divisors (see below), whose sum is σ = 5755968. Its totient is φ = 2131200.

The previous prime is 3736813. The next prime is 3736823. The reversal of 3736821 is 1286373.

3736821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3736821 - 2³ = 3736813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3736823) 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 15 ways as a sum of consecutive naturals, for example, 2770 + ... + 3891.

It is an arithmetic number, because the mean of its divisors is an integer number (359748).

Almost surely, 2^3736821 is an apocalyptic number.

It is an amenable number.

3736821 is a deficient number, since it is larger than the sum of its proper divisors (2019147).

3736821 is a wasteful number, since it uses less digits than its factorization.

3736821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692.

The product of its digits is 6048, while the sum is 30.

The square root of 3736821 is about 1933.0858749678. The cubic root of 3736821 is about 155.1794107071.

The spelling of 3736821 in words is "three million, seven hundred thirty-six thousand, eight hundred twenty-one".