254638463 has 4 divisors (see below), whose sum is σ = 254779968. Its totient is φ = 254496960.

The previous prime is 254638459. The next prime is 254638469. The reversal of 254638463 is 364836452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 254638463 - 2² = 254638459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254638463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254638469) 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, 68018 + ... + 71663.

It is an arithmetic number, because the mean of its divisors is an integer number (63694992).

Almost surely, 2^254638463 is an apocalyptic number.

254638463 is a deficient number, since it is larger than the sum of its proper divisors (141505).

254638463 is a wasteful number, since it uses less digits than its factorization.

254638463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141504.

The product of its digits is 414720, while the sum is 41.

The square root of 254638463 is about 15957.3952448387. The cubic root of 254638463 is about 633.8327393994.

The spelling of 254638463 in words is "two hundred fifty-four million, six hundred thirty-eight thousand, four hundred sixty-three".