274785397 has 4 divisors (see below), whose sum is σ = 276224256. Its totient is φ = 273346540.

The previous prime is 274785389. The next prime is 274785409. The reversal of 274785397 is 793587472.

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 274785397 - 2³ = 274785389 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 (274785317) 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, 719143 + ... + 719524.

It is an arithmetic number, because the mean of its divisors is an integer number (69056064).

Almost surely, 2^274785397 is an apocalyptic number.

It is an amenable number.

274785397 is a deficient number, since it is larger than the sum of its proper divisors (1438859).

274785397 is a wasteful number, since it uses less digits than its factorization.

274785397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438858.

The product of its digits is 2963520, while the sum is 52.

The square root of 274785397 is about 16576.6521650181. The cubic root of 274785397 is about 650.1265213279.

The spelling of 274785397 in words is "two hundred seventy-four million, seven hundred eighty-five thousand, three hundred ninety-seven".