254640723 has 8 divisors (see below), whose sum is σ = 340095888. Its totient is φ = 169473024.

The previous prime is 254640721. The next prime is 254640731. The reversal of 254640723 is 327046452.

254640723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 254640723 - 2¹ = 254640721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254640721) 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, 69790 + ... + 73347.

It is an arithmetic number, because the mean of its divisors is an integer number (42511986).

Almost surely, 2^254640723 is an apocalyptic number.

254640723 is a deficient number, since it is larger than the sum of its proper divisors (85455165).

254640723 is a wasteful number, since it uses less digits than its factorization.

254640723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143733.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 254640723 is about 15957.4660582437. The cubic root of 254640723 is about 633.8346145518.

The spelling of 254640723 in words is "two hundred fifty-four million, six hundred forty thousand, seven hundred twenty-three".