3654659 has 4 divisors (see below), whose sum is σ = 3661416. Its totient is φ = 3647904.

The previous prime is 3654647. The next prime is 3654671. The reversal of 3654659 is 9564563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9564563 = 89 ⋅107467.

It is an interprime number because it is at equal distance from previous prime (3654647) and next prime (3654671).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3654659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3654689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2489 + ... + 3674.

It is an arithmetic number, because the mean of its divisors is an integer number (915354).

Almost surely, 2^3654659 is an apocalyptic number.

3654659 is a deficient number, since it is larger than the sum of its proper divisors (6757).

3654659 is an equidigital number, since it uses as much as digits as its factorization.

3654659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6756.

The product of its digits is 97200, while the sum is 38.

The square root of 3654659 is about 1911.7162446346. The cubic root of 3654659 is about 154.0336548698.

The spelling of 3654659 in words is "three million, six hundred fifty-four thousand, six hundred fifty-nine".