202605013 has 4 divisors (see below), whose sum is σ = 218190028. Its totient is φ = 187020000.

The previous prime is 202605001. The next prime is 202605019. The reversal of 202605013 is 310506202.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40220964 + 162384049 = 6342^2 + 12743^2 .

It is a cyclic number.

It is not a de Polignac number, because 202605013 - 2⁵ = 202604981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202605019) 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, 7792488 + ... + 7792513.

It is an arithmetic number, because the mean of its divisors is an integer number (54547507).

Almost surely, 2^202605013 is an apocalyptic number.

It is an amenable number.

202605013 is a deficient number, since it is larger than the sum of its proper divisors (15585015).

202605013 is a wasteful number, since it uses less digits than its factorization.

202605013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15585014.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 202605013 is about 14233.9387732279. The cubic root of 202605013 is about 587.3316377681.

The spelling of 202605013 in words is "two hundred two million, six hundred five thousand, thirteen".