274697221 has 4 divisors (see below), whose sum is σ = 276673600. Its totient is φ = 272720844.

The previous prime is 274697219. The next prime is 274697249. The reversal of 274697221 is 122796472.

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 274697221 - 2¹ = 274697219 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 (274697261) 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, 987981 + ... + 988258.

It is an arithmetic number, because the mean of its divisors is an integer number (69168400).

Almost surely, 2^274697221 is an apocalyptic number.

It is an amenable number.

274697221 is a deficient number, since it is larger than the sum of its proper divisors (1976379).

274697221 is a wasteful number, since it uses less digits than its factorization.

274697221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976378.

The product of its digits is 84672, while the sum is 40.

The square root of 274697221 is about 16573.9923072264. The cubic root of 274697221 is about 650.0569740986.

The spelling of 274697221 in words is "two hundred seventy-four million, six hundred ninety-seven thousand, two hundred twenty-one".