2684427261 has 4 divisors (see below), whose sum is σ = 3579236352. Its totient is φ = 1789618172.

The previous prime is 2684427227. The next prime is 2684427287. The reversal of 2684427261 is 1627244862.

It is a happy number.

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 2684427261 - 2⁷ = 2684427133 is a prime.

It is a super-2 number, since 2×2684427261² = 14412299439199924242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2684427461) 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, 447404541 + ... + 447404546.

It is an arithmetic number, because the mean of its divisors is an integer number (894809088).

Almost surely, 2^2684427261 is an apocalyptic number.

It is an amenable number.

2684427261 is a deficient number, since it is larger than the sum of its proper divisors (894809091).

2684427261 is an equidigital number, since it uses as much as digits as its factorization.

2684427261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894809090.

The product of its digits is 258048, while the sum is 42.

The square root of 2684427261 is about 51811.4587808527. The cubic root of 2684427261 is about 1389.7943661783.

The spelling of 2684427261 in words is "two billion, six hundred eighty-four million, four hundred twenty-seven thousand, two hundred sixty-one".