3721608 has 96 divisors (see below), whose sum is σ = 11381760. Its totient is φ = 1088640.

The previous prime is 3721603. The next prime is 3721621. The reversal of 3721608 is 8061273.

3721608 is a `hidden beast` number, since 37 + 21 + 608 = 666.

It is a super-2 number, since 2×3721608² = 27700732211328, which contains 22 as substring.

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 not an unprimeable number, because it can be changed into a prime (3721603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29241 + ... + 29367.

It is an arithmetic number, because the mean of its divisors is an integer number (118560).

Almost surely, 2^3721608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3721608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5690880).

3721608 is an abundant number, since it is smaller than the sum of its proper divisors (7660152).

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

3721608 is a wasteful number, since it uses less digits than its factorization.

3721608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 3721608 is about 1929.1469617424. The cubic root of 3721608 is about 154.9685402680.

The spelling of 3721608 in words is "three million, seven hundred twenty-one thousand, six hundred eight".