3645942 has 16 divisors (see below), whose sum is σ = 7310640. Its totient is φ = 1212192.

The previous prime is 3645913. The next prime is 3645949. The reversal of 3645942 is 2495463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3984 + ... + 4812.

It is an arithmetic number, because the mean of its divisors is an integer number (456915).

Almost surely, 2^3645942 is an apocalyptic number.

3645942 is an abundant number, since it is smaller than the sum of its proper divisors (3664698).

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

3645942 is a wasteful number, since it uses less digits than its factorization.

3645942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567.

The product of its digits is 25920, while the sum is 33.

The square root of 3645942 is about 1909.4349949658. The cubic root of 3645942 is about 153.9110916503.

The spelling of 3645942 in words is "three million, six hundred forty-five thousand, nine hundred forty-two".