2645951 has 12 divisors (see below), whose sum is σ = 3358440. Its totient is φ = 2061360.

The previous prime is 2645941. The next prime is 2645971. The reversal of 2645951 is 1595462.

It is a happy number.

It is not a de Polignac number, because 2645951 - 2⁶ = 2645887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1916 + ... + 2993.

It is an arithmetic number, because the mean of its divisors is an integer number (279870).

2^2645951 is an apocalyptic number.

2645951 is a deficient number, since it is larger than the sum of its proper divisors (712489).

2645951 is a wasteful number, since it uses less digits than its factorization.

2645951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934 (or 4927 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 2645951 is about 1626.6379437355. The cubic root of 2645951 is about 138.3122349720.

The spelling of 2645951 in words is "two million, six hundred forty-five thousand, nine hundred fifty-one".