2685236901 has 4 divisors (see below), whose sum is σ = 3580315872. Its totient is φ = 1790157932.

The previous prime is 2685236893. The next prime is 2685236923. The reversal of 2685236901 is 1096325862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2685236901 - 2³ = 2685236893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685236201) 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, 447539481 + ... + 447539486.

It is an arithmetic number, because the mean of its divisors is an integer number (895078968).

Almost surely, 2^2685236901 is an apocalyptic number.

It is an amenable number.

2685236901 is a deficient number, since it is larger than the sum of its proper divisors (895078971).

2685236901 is an equidigital number, since it uses as much as digits as its factorization.

2685236901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895078970.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 2685236901 is about 51819.2715213172. The cubic root of 2685236901 is about 1389.9340756823.

The spelling of 2685236901 in words is "two billion, six hundred eighty-five million, two hundred thirty-six thousand, nine hundred one".