2400655 has 16 divisors (see below), whose sum is σ = 3106944. Its totient is φ = 1774080.

The previous prime is 2400623. The next prime is 2400661. The reversal of 2400655 is 5560042.

It is not a de Polignac number, because 2400655 - 2⁵ = 2400623 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4954 + ... + 5416.

It is an arithmetic number, because the mean of its divisors is an integer number (194184).

2^2400655 is an apocalyptic number.

2400655 is a deficient number, since it is larger than the sum of its proper divisors (706289).

2400655 is a wasteful number, since it uses less digits than its factorization.

2400655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2400655 is about 1549.4047244022. The cubic root of 2400655 is about 133.8987688692.

Adding to 2400655 its reverse (5560042), we get a palindrome (7960697).

The spelling of 2400655 in words is "two million, four hundred thousand, six hundred fifty-five".