654455868 has 48 divisors (see below), whose sum is σ = 1763887104. Its totient is φ = 186653440.

The previous prime is 654455863. The next prime is 654455873. The reversal of 654455868 is 868554456.

It is an interprime number because it is at equal distance from previous prime (654455863) and next prime (654455873).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 654455868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654455863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143580 + ... + 148067.

It is an arithmetic number, because the mean of its divisors is an integer number (36747648).

Almost surely, 2^654455868 is an apocalyptic number.

654455868 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

654455868 is an abundant number, since it is smaller than the sum of its proper divisors (1109431236).

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

654455868 is a wasteful number, since it uses less digits than its factorization.

654455868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291682 (or 291680 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 51.

The square root of 654455868 is about 25582.3350771582. The cubic root of 654455868 is about 868.2140081938.

The spelling of 654455868 in words is "six hundred fifty-four million, four hundred fifty-five thousand, eight hundred sixty-eight".