3630858 has 64 divisors (see below), whose sum is σ = 9400320. Its totient is φ = 907200.

The previous prime is 3630857. The next prime is 3630859. The reversal of 3630858 is 8580363.

It is an interprime number because it is at equal distance from previous prime (3630857) and next prime (3630859).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (3630857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13263 + ... + 13533.

It is an arithmetic number, because the mean of its divisors is an integer number (146880).

Almost surely, 2^3630858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3630858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4700160).

3630858 is an abundant number, since it is smaller than the sum of its proper divisors (5769462).

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

3630858 is a wasteful number, since it uses less digits than its factorization.

3630858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 3630858 is about 1905.4810416270. The cubic root of 3630858 is about 153.6985444840.

Adding to 3630858 its reverse (8580363), we get a palindrome (12211221).

The spelling of 3630858 in words is "three million, six hundred thirty thousand, eight hundred fifty-eight".