2640064202 has 4 divisors (see below), whose sum is σ = 3960096306. Its totient is φ = 1320032100.

The previous prime is 2640064187. The next prime is 2640064211. The reversal of 2640064202 is 2024600462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1934152441 + 705911761 = 43979^2 + 26569^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660016049 + ... + 660016052.

Almost surely, 2^2640064202 is an apocalyptic number.

2640064202 is a deficient number, since it is larger than the sum of its proper divisors (1320032104).

2640064202 is a wasteful number, since it uses less digits than its factorization.

2640064202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320032103.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2640064202 is about 51381.5550757273. Note that the first 3 decimals coincide. The cubic root of 2640064202 is about 1382.0958495223.

Adding to 2640064202 its reverse (2024600462), we get a palindrome (4664664664).

The spelling of 2640064202 in words is "two billion, six hundred forty million, sixty-four thousand, two hundred two".