2643398 has 8 divisors (see below), whose sum is σ = 4198392. Its totient is φ = 1243936.

The previous prime is 2643397. The next prime is 2643427. The reversal of 2643398 is 8933462.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct 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 (2643397) 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, 38840 + ... + 38907.

It is an arithmetic number, because the mean of its divisors is an integer number (524799).

2^2643398 is an apocalyptic number.

2643398 is a deficient number, since it is larger than the sum of its proper divisors (1554994).

2643398 is a wasteful number, since it uses less digits than its factorization.

2643398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77766.

The product of its digits is 31104, while the sum is 35.

The square root of 2643398 is about 1625.8530068859. The cubic root of 2643398 is about 138.2677361931.

Subtracting 2643398 from its reverse (8933462), we obtain a square (6290064 = 2508²).

The spelling of 2643398 in words is "two million, six hundred forty-three thousand, three hundred ninety-eight".