3645234 has 24 divisors (see below), whose sum is σ = 8049132. Its totient is φ = 1191840.

The previous prime is 3645227. The next prime is 3645251. The reversal of 3645234 is 4325463.

It can be written as a sum of positive squares in 2 ways, for example, as 3229209 + 416025 = 1797^2 + 645^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3645198 and 3645207.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957 + ... + 2864.

Almost surely, 2^3645234 is an apocalyptic number.

3645234 is an abundant number, since it is smaller than the sum of its proper divisors (4403898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3645234 is a wasteful number, since it uses less digits than its factorization.

3645234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882 (or 3879 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 3645234 is about 1909.2495908079. The cubic root of 3645234 is about 153.9011284174.

The spelling of 3645234 in words is "three million, six hundred forty-five thousand, two hundred thirty-four".