254646646 has 4 divisors (see below), whose sum is σ = 381969972. Its totient is φ = 127323322.

The previous prime is 254646643. The next prime is 254646649. The reversal of 254646646 is 646646452.

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

It is an interprime number because it is at equal distance from previous prime (254646643) and next prime (254646649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254646641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63661660 + ... + 63661663.

It is an arithmetic number, because the mean of its divisors is an integer number (95492493).

Almost surely, 2^254646646 is an apocalyptic number.

254646646 is a deficient number, since it is larger than the sum of its proper divisors (127323326).

254646646 is a wasteful number, since it uses less digits than its factorization.

254646646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127323325.

The product of its digits is 829440, while the sum is 43.

The square root of 254646646 is about 15957.6516442740. The cubic root of 254646646 is about 633.8395288919.

The spelling of 254646646 in words is "two hundred fifty-four million, six hundred forty-six thousand, six hundred forty-six".