254768649 has 4 divisors (see below), whose sum is σ = 339691536. Its totient is φ = 169845764.

The previous prime is 254768621. The next prime is 254768651. The reversal of 254768649 is 946867452.

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 254768649 - 2⁵ = 254768617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254768609) 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, 42461439 + ... + 42461444.

It is an arithmetic number, because the mean of its divisors is an integer number (84922884).

Almost surely, 2^254768649 is an apocalyptic number.

It is an amenable number.

254768649 is a deficient number, since it is larger than the sum of its proper divisors (84922887).

254768649 is an equidigital number, since it uses as much as digits as its factorization.

254768649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84922886.

The product of its digits is 2903040, while the sum is 51.

The square root of 254768649 is about 15961.4738981085. The cubic root of 254768649 is about 633.9407383897.

It can be divided in two parts, 25 and 4768649, that added together give a palindrome (4768674).

The spelling of 254768649 in words is "two hundred fifty-four million, seven hundred sixty-eight thousand, six hundred forty-nine".