274772861 has 4 divisors (see below), whose sum is σ = 299752224. Its totient is φ = 249793500.

The previous prime is 274772833. The next prime is 274772867. The reversal of 274772861 is 168277472.

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 not a de Polignac number, because 274772861 - 2²⁶ = 207663997 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 (274772867) 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, 12489665 + ... + 12489686.

It is an arithmetic number, because the mean of its divisors is an integer number (74938056).

Almost surely, 2^274772861 is an apocalyptic number.

It is an amenable number.

274772861 is a deficient number, since it is larger than the sum of its proper divisors (24979363).

274772861 is a wasteful number, since it uses less digits than its factorization.

274772861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24979362.

The product of its digits is 263424, while the sum is 44.

The square root of 274772861 is about 16576.2740385166. The cubic root of 274772861 is about 650.1166346914.

The spelling of 274772861 in words is "two hundred seventy-four million, seven hundred seventy-two thousand, eight hundred sixty-one".