2651606 has 4 divisors (see below), whose sum is σ = 3977412. Its totient is φ = 1325802.

The previous prime is 2651603. The next prime is 2651611. The reversal of 2651606 is 6061562.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662900 + ... + 662903.

It is an arithmetic number, because the mean of its divisors is an integer number (994353).

2^2651606 is an apocalyptic number.

2651606 is a deficient number, since it is larger than the sum of its proper divisors (1325806).

2651606 is a wasteful number, since it uses less digits than its factorization.

2651606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325805.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2651606 is about 1628.3752638750. The cubic root of 2651606 is about 138.4106997753.

The spelling of 2651606 in words is "two million, six hundred fifty-one thousand, six hundred six".