3644761 has 2 divisors, whose sum is σ = 3644762. Its totient is φ = 3644760.

The previous prime is 3644747. The next prime is 3644791. The reversal of 3644761 is 1674463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 1394761 = 1500^2 + 1181^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644761 - 2¹³ = 3636569 is a prime.

It is a d-powerful number, because it can be written as 3⁸ + 6⁸ + 4² + 4⁹ + 7⁵ + 6⁸ + 1 .

3644761 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3644731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822380 + 1822381.

It is an arithmetic number, because the mean of its divisors is an integer number (1822381).

Almost surely, 2^3644761 is an apocalyptic number.

It is an amenable number.

3644761 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644761 is an equidigital number, since it uses as much as digits as its factorization.

3644761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 3644761 is about 1909.1257161329. The cubic root of 3644761 is about 153.8944714710.

The spelling of 3644761 in words is "three million, six hundred forty-four thousand, seven hundred sixty-one".