3656437 has 2 divisors, whose sum is σ = 3656438. Its totient is φ = 3656436.

The previous prime is 3656413. The next prime is 3656441. The reversal of 3656437 is 7346563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3129361 + 527076 = 1769^2 + 726^2 .

It is a cyclic number.

It is not a de Polignac number, because 3656437 - 2¹¹ = 3654389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3656447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1828218 + 1828219.

It is an arithmetic number, because the mean of its divisors is an integer number (1828219).

Almost surely, 2^3656437 is an apocalyptic number.

It is an amenable number.

3656437 is a deficient number, since it is larger than the sum of its proper divisors (1).

3656437 is an equidigital number, since it uses as much as digits as its factorization.

3656437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 34.

The square root of 3656437 is about 1912.1812152618. The cubic root of 3656437 is about 154.0586300624.

The spelling of 3656437 in words is "three million, six hundred fifty-six thousand, four hundred thirty-seven".