274975991 has 8 divisors (see below), whose sum is σ = 281487360. Its totient is φ = 268492248.

The previous prime is 274975979. The next prime is 274975997. The reversal of 274975991 is 199579472.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274975991 is a prime.

It is a super-2 number, since 2×274975991² = 151223591252864162, 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 (274975997) 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, 13970 + ... + 27296.

It is an arithmetic number, because the mean of its divisors is an integer number (35185920).

Almost surely, 2^274975991 is an apocalyptic number.

274975991 is a deficient number, since it is larger than the sum of its proper divisors (6511369).

274975991 is a wasteful number, since it uses less digits than its factorization.

274975991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13813.

The product of its digits is 1428840, while the sum is 53.

The square root of 274975991 is about 16582.4000373890. The cubic root of 274975991 is about 650.2767980870.

The spelling of 274975991 in words is "two hundred seventy-four million, nine hundred seventy-five thousand, nine hundred ninety-one".