2640502 has 4 divisors (see below), whose sum is σ = 3960756. Its totient is φ = 1320250.

The previous prime is 2640497. The next prime is 2640503. The reversal of 2640502 is 2050462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2050462 = 2 ⋅1025231.

It is a self number, because there is not a number n which added to its sum of digits gives 2640502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660124 + ... + 660127.

It is an arithmetic number, because the mean of its divisors is an integer number (990189).

2^2640502 is an apocalyptic number.

2640502 is a deficient number, since it is larger than the sum of its proper divisors (1320254).

2640502 is a wasteful number, since it uses less digits than its factorization.

2640502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320253.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2640502 is about 1624.9621534054. The cubic root of 2640502 is about 138.2172242280.

Adding to 2640502 its reverse (2050462), we get a palindrome (4690964).

The spelling of 2640502 in words is "two million, six hundred forty thousand, five hundred two".