2505698 has 16 divisors (see below), whose sum is σ = 4286520. Its totient is φ = 1088256.

The previous prime is 2505691. The next prime is 2505707. The reversal of 2505698 is 8965052.

It can be written as a sum of positive squares in 4 ways, for example, as 1760929 + 744769 = 1327^2 + 863^2 .

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2505691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2393 + ... + 3276.

2^2505698 is an apocalyptic number.

2505698 is a deficient number, since it is larger than the sum of its proper divisors (1780822).

2505698 is a wasteful number, since it uses less digits than its factorization.

2505698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5701.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 2505698 is about 1582.9396703602. The cubic root of 2505698 is about 135.8239142686.

The spelling of 2505698 in words is "two million, five hundred five thousand, six hundred ninety-eight".