2651906 has 12 divisors (see below), whose sum is σ = 4199382. Its totient is φ = 1255824.

The previous prime is 2651899. The next prime is 2651911. The reversal of 2651906 is 6091562.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 43681 = 1615^2 + 209^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115 + ... + 2558.

2^2651906 is an apocalyptic number.

2651906 is a deficient number, since it is larger than the sum of its proper divisors (1547476).

2651906 is a wasteful number, since it uses less digits than its factorization.

2651906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713 (or 3694 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2651906 is about 1628.4673776284. The cubic root of 2651906 is about 138.4159194603.

The spelling of 2651906 in words is "two million, six hundred fifty-one thousand, nine hundred six".