2649895 has 4 divisors (see below), whose sum is σ = 3179880. Its totient is φ = 2119912.

The previous prime is 2649893. The next prime is 2649923. The reversal of 2649895 is 5989462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5989462 = 2 ⋅2994731.

It is a cyclic number.

It is not a de Polignac number, because 2649895 - 2¹ = 2649893 is a prime.

It is a super-2 number, since 2×2649895² = 14043887022050, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁶ + 4⁸ + 9³ + 8³ + 9⁵ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264985 + ... + 264994.

It is an arithmetic number, because the mean of its divisors is an integer number (794970).

2^2649895 is an apocalyptic number.

2649895 is a deficient number, since it is larger than the sum of its proper divisors (529985).

2649895 is an equidigital number, since it uses as much as digits as its factorization.

2649895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529984.

The product of its digits is 155520, while the sum is 43.

The square root of 2649895 is about 1627.8498087969. The cubic root of 2649895 is about 138.3809226436.

The spelling of 2649895 in words is "two million, six hundred forty-nine thousand, eight hundred ninety-five".