3654605 has 8 divisors (see below), whose sum is σ = 4405752. Its totient is φ = 2910208.

The previous prime is 3654587. The next prime is 3654641. The reversal of 3654605 is 5064563.

It can be written as a sum of positive squares in 4 ways, for example, as 958441 + 2696164 = 979^2 + 1642^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3654605 - 2⁸ = 3654349 is a prime.

It is a super-2 number, since 2×3654605² = 26712275412050, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404 + ... + 2733.

It is an arithmetic number, because the mean of its divisors is an integer number (550719).

Almost surely, 2^3654605 is an apocalyptic number.

It is an amenable number.

3654605 is a deficient number, since it is larger than the sum of its proper divisors (751147).

3654605 is a wasteful number, since it uses less digits than its factorization.

3654605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 3654605 is about 1911.7021211475. The cubic root of 3654605 is about 154.0328962164.

The spelling of 3654605 in words is "three million, six hundred fifty-four thousand, six hundred five".