2400646 has 4 divisors (see below), whose sum is σ = 3600972. Its totient is φ = 1200322.

The previous prime is 2400623. The next prime is 2400661. The reversal of 2400646 is 6460042.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600160 + ... + 600163.

It is an arithmetic number, because the mean of its divisors is an integer number (900243).

2^2400646 is an apocalyptic number.

2400646 is a deficient number, since it is larger than the sum of its proper divisors (1200326).

2400646 is a wasteful number, since it uses less digits than its factorization.

2400646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200325.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2400646 is about 1549.4018200583. The cubic root of 2400646 is about 133.8986015412.

Adding to 2400646 its reverse (6460042), we get a palindrome (8860688).

The spelling of 2400646 in words is "two million, four hundred thousand, six hundred forty-six".