2506634 has 16 divisors (see below), whose sum is σ = 4076520. Its totient is φ = 1149120.

The previous prime is 2506631. The next prime is 2506643. The reversal of 2506634 is 4366052.

It can be written as a sum of positive squares in 4 ways, for example, as 1500625 + 1006009 = 1225^2 + 1003^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2506631) 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, 5744 + ... + 6164.

2^2506634 is an apocalyptic number.

2506634 is a deficient number, since it is larger than the sum of its proper divisors (1569886).

2506634 is a wasteful number, since it uses less digits than its factorization.

2506634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 2506634 is about 1583.2352952104. The cubic root of 2506634 is about 135.8408244412.

The spelling of 2506634 in words is "two million, five hundred six thousand, six hundred thirty-four".