2261606 has 4 divisors (see below), whose sum is σ = 3392412. Its totient is φ = 1130802.

The previous prime is 2261603. The next prime is 2261617. The reversal of 2261606 is 6061622.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2261606² = 10229723398472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565400 + ... + 565403.

It is an arithmetic number, because the mean of its divisors is an integer number (848103).

2^2261606 is an apocalyptic number.

2261606 is a deficient number, since it is larger than the sum of its proper divisors (1130806).

2261606 is a wasteful number, since it uses less digits than its factorization.

2261606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130805.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2261606 is about 1503.8636906316. The cubic root of 2261606 is about 131.2619895321.

The spelling of 2261606 in words is "two million, two hundred sixty-one thousand, six hundred six".