3201618 has 32 divisors (see below), whose sum is σ = 7557120. Its totient is φ = 884880.

The previous prime is 3201617. The next prime is 3201619. The reversal of 3201618 is 8161023.

It is an interprime number because it is at equal distance from previous prime (3201617) and next prime (3201619).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 3201594 and 3201603.

It is not an unprimeable number, because it can be changed into a prime (3201617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (236160).

Almost surely, 2^3201618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3201618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3778560).

3201618 is an abundant number, since it is smaller than the sum of its proper divisors (4355502).

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

3201618 is a wasteful number, since it uses less digits than its factorization.

3201618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 3201618 is about 1789.3065695962. The cubic root of 3201618 is about 147.3860922732.

The spelling of 3201618 in words is "three million, two hundred one thousand, six hundred eighteen".