3736421 has 6 divisors (see below), whose sum is σ = 4046130. Its totient is φ = 3448848.

The previous prime is 3736409. The next prime is 3736423. The reversal of 3736421 is 1246373.

It can be written as a sum of positive squares in 3 ways, for example, as 168100 + 3568321 = 410^2 + 1889^2 .

It is not a de Polignac number, because 3736421 - 2¹⁴ = 3720037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3736423) 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, 10886 + ... + 11223.

It is an arithmetic number, because the mean of its divisors is an integer number (674355).

Almost surely, 2^3736421 is an apocalyptic number.

It is an amenable number.

3736421 is a deficient number, since it is larger than the sum of its proper divisors (309709).

3736421 is a wasteful number, since it uses less digits than its factorization.

3736421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22135 (or 22122 counting only the distinct ones).

The product of its digits is 3024, while the sum is 26.

The square root of 3736421 is about 1932.9824106804. The cubic root of 3736421 is about 155.1738735603.

The spelling of 3736421 in words is "three million, seven hundred thirty-six thousand, four hundred twenty-one".