864520254 has 96 divisors (see below), whose sum is σ = 2133374880. Its totient is φ = 250822656.

The previous prime is 864520253. The next prime is 864520309. The reversal of 864520254 is 452025468.

It is a happy number.

864520254 is a `hidden beast` number, since 8 + 645 + 2 + 0 + 2 + 5 + 4 = 666.

864520254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864520253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1498014 + ... + 1498590.

It is an arithmetic number, because the mean of its divisors is an integer number (22222655).

Almost surely, 2^864520254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864520254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066687440).

864520254 is an abundant number, since it is smaller than the sum of its proper divisors (1268854626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864520254 is a wasteful number, since it uses less digits than its factorization.

864520254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 864520254 is about 29402.7252818510. The cubic root of 864520254 is about 952.6317622090.

The spelling of 864520254 in words is "eight hundred sixty-four million, five hundred twenty thousand, two hundred fifty-four".