2361645 has 48 divisors (see below), whose sum is σ = 4822272. Its totient is φ = 1054080.

The previous prime is 2361637. The next prime is 2361649. The reversal of 2361645 is 5461632.

2361645 is a `hidden beast` number, since 2 + 3 + 616 + 45 = 666.

It is not a de Polignac number, because 2361645 - 2³ = 2361637 is a prime.

It is a super-3 number, since 3×2361645³ = 39515283417325233375, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2¹⁷ + 3¹² + 6 + 1 + 6⁸ + 4⁷ + 5⁵ .

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2361649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6252 + ... + 6618.

It is an arithmetic number, because the mean of its divisors is an integer number (100464).

2^2361645 is an apocalyptic number.

It is an amenable number.

2361645 is an abundant number, since it is smaller than the sum of its proper divisors (2460627).

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

2361645 is a wasteful number, since it uses less digits than its factorization.

2361645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 399 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2361645 is about 1536.7644582043. The cubic root of 2361645 is about 133.1695314885.

It can be divided in two parts, 236 and 1645, that added together give a palindrome (1881).

The spelling of 2361645 in words is "two million, three hundred sixty-one thousand, six hundred forty-five".