2381606 has 16 divisors (see below), whose sum is σ = 3732480. Its totient is φ = 1138440.

The previous prime is 2381591. The next prime is 2381609. The reversal of 2381606 is 6061832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381609) 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, 6455 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (233280).

2^2381606 is an apocalyptic number.

2381606 is a deficient number, since it is larger than the sum of its proper divisors (1350874).

2381606 is a wasteful number, since it uses less digits than its factorization.

2381606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2381606 is about 1543.2452818655. The cubic root of 2381606 is about 133.5436694049.

Multiplying 2381606 by its sum of digits (26), we get a triangular number (61921756 = T₁₁₁₂₈).

The spelling of 2381606 in words is "two million, three hundred eighty-one thousand, six hundred six".