274506813 has 80 divisors (see below), whose sum is σ = 500881920. Its totient is φ = 146336544.

The previous prime is 274506809. The next prime is 274506821. The reversal of 274506813 is 318605472.

274506813 is a `hidden beast` number, since 2 + 74 + 506 + 81 + 3 = 666.

It is not a de Polignac number, because 274506813 - 2² = 274506809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274506823) 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 79 ways as a sum of consecutive naturals, for example, 894006 + ... + 894312.

It is an arithmetic number, because the mean of its divisors is an integer number (6261024).

Almost surely, 2^274506813 is an apocalyptic number.

It is an amenable number.

274506813 is a deficient number, since it is larger than the sum of its proper divisors (226375107).

274506813 is a wasteful number, since it uses less digits than its factorization.

274506813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 274506813 is about 16568.2471311844. The cubic root of 274506813 is about 649.9067424392.

The spelling of 274506813 in words is "two hundred seventy-four million, five hundred six thousand, eight hundred thirteen".