274991997 has 32 divisors (see below), whose sum is σ = 443499520. Its totient is φ = 148055040.

The previous prime is 274991963. The next prime is 274992001. The reversal of 274991997 is 799199472.

It is not a de Polignac number, because 274991997 - 2¹² = 274987901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274991947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75222 + ... + 78792.

It is an arithmetic number, because the mean of its divisors is an integer number (13859360).

Almost surely, 2^274991997 is an apocalyptic number.

It is an amenable number.

274991997 is a deficient number, since it is larger than the sum of its proper divisors (168507523).

274991997 is a wasteful number, since it uses less digits than its factorization.

274991997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793.

The product of its digits is 2571912, while the sum is 57.

The square root of 274991997 is about 16582.8826504923. The cubic root of 274991997 is about 650.2894151019.

The spelling of 274991997 in words is "two hundred seventy-four million, nine hundred ninety-one thousand, nine hundred ninety-seven".