274973861 has 8 divisors (see below), whose sum is σ = 293727384. Its totient is φ = 256506880.

The previous prime is 274973857. The next prime is 274973873. The reversal of 274973861 is 168379472.

It can be written as a sum of positive squares in 4 ways, for example, as 41036836 + 233937025 = 6406^2 + 15295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 274973861 - 2² = 274973857 is a prime.

It is a super-2 number, since 2×274973861² = 151221248466494642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274973801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69650 + ... + 73491.

It is an arithmetic number, because the mean of its divisors is an integer number (36715923).

Almost surely, 2^274973861 is an apocalyptic number.

It is an amenable number.

274973861 is a deficient number, since it is larger than the sum of its proper divisors (18753523).

274973861 is a wasteful number, since it uses less digits than its factorization.

274973861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143271.

The product of its digits is 508032, while the sum is 47.

The square root of 274973861 is about 16582.3358125446. The cubic root of 274973861 is about 650.2751190396.

The spelling of 274973861 in words is "two hundred seventy-four million, nine hundred seventy-three thousand, eight hundred sixty-one".