3646737 has 12 divisors (see below), whose sum is σ = 5284084. Its totient is φ = 2423520.

The previous prime is 3646729. The next prime is 3646739. The reversal of 3646737 is 7376463.

3646737 is a `hidden beast` number, since 3 + 646 + 7 + 3 + 7 = 666.

3646737 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 1089936 + 2556801 = 1044^2 + 1599^2 .

It is not a de Polignac number, because 3646737 - 2³ = 3646729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3646739) 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, 5187 + ... + 5847.

Almost surely, 2^3646737 is an apocalyptic number.

It is an amenable number.

3646737 is a deficient number, since it is larger than the sum of its proper divisors (1637347).

3646737 is a wasteful number, since it uses less digits than its factorization.

3646737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 1277 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 3646737 is about 1909.6431603836. The cubic root of 3646737 is about 153.9222776415.

The spelling of 3646737 in words is "three million, six hundred forty-six thousand, seven hundred thirty-seven".