3651653 has 2 divisors, whose sum is σ = 3651654. Its totient is φ = 3651652.

The previous prime is 3651623. The next prime is 3651671. The reversal of 3651653 is 3561563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2982529 + 669124 = 1727^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 3651653 - 2²⁰ = 2603077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3651623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1825826 + 1825827.

It is an arithmetic number, because the mean of its divisors is an integer number (1825827).

Almost surely, 2^3651653 is an apocalyptic number.

It is an amenable number.

3651653 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651653 is an equidigital number, since it uses as much as digits as its factorization.

3651653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 29.

The square root of 3651653 is about 1910.9298783577. The cubic root of 3651653 is about 153.9914117885.

The spelling of 3651653 in words is "three million, six hundred fifty-one thousand, six hundred fifty-three".