2644898 has 4 divisors (see below), whose sum is σ = 3967350. Its totient is φ = 1322448.

The previous prime is 2644891. The next prime is 2644903. The reversal of 2644898 is 8984462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8984462 = 2 ⋅4492231.

It can be written as a sum of positive squares in only one way, i.e., 2474329 + 170569 = 1573^2 + 413^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2644891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661223 + ... + 661226.

2^2644898 is an apocalyptic number.

2644898 is a deficient number, since it is larger than the sum of its proper divisors (1322452).

2644898 is a wasteful number, since it uses less digits than its factorization.

2644898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322451.

The product of its digits is 110592, while the sum is 41.

The square root of 2644898 is about 1626.3142377782. The cubic root of 2644898 is about 138.2938846563.

The spelling of 2644898 in words is "two million, six hundred forty-four thousand, eight hundred ninety-eight".