2506618 has 8 divisors (see below), whose sum is σ = 3797460. Its totient is φ = 1240800.

The previous prime is 2506583. The next prime is 2506619. The reversal of 2506618 is 8166052.

It can be written as a sum of positive squares in 2 ways, for example, as 2505889 + 729 = 1583^2 + 27^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2506619) 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, 6003 + ... + 6406.

2^2506618 is an apocalyptic number.

2506618 is a deficient number, since it is larger than the sum of its proper divisors (1290842).

2506618 is a wasteful number, since it uses less digits than its factorization.

2506618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12512.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2506618 is about 1583.2302422579. The cubic root of 2506618 is about 135.8405354138.

The spelling of 2506618 in words is "two million, five hundred six thousand, six hundred eighteen".