3736521 has 12 divisors (see below), whose sum is σ = 5681520. Its totient is φ = 2359800.

The previous prime is 3736507. The next prime is 3736541. The reversal of 3736521 is 1256373.

It is a happy number.

3736521 is a `hidden beast` number, since 3 + 7 + 3 + 652 + 1 = 666.

It is not a de Polignac number, because 3736521 - 2⁷ = 3736393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3736501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10755 + ... + 11096.

It is an arithmetic number, because the mean of its divisors is an integer number (473460).

Almost surely, 2^3736521 is an apocalyptic number.

It is an amenable number.

3736521 is a deficient number, since it is larger than the sum of its proper divisors (1944999).

3736521 is a wasteful number, since it uses less digits than its factorization.

3736521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21876 (or 21873 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 3736521 is about 1933.0082772715. The cubic root of 3736521 is about 155.1752578840.

The spelling of 3736521 in words is "three million, seven hundred thirty-six thousand, five hundred twenty-one".