654057887 has 4 divisors (see below), whose sum is σ = 747494736. Its totient is φ = 560621040.

The previous prime is 654057857. The next prime is 654057889. The reversal of 654057887 is 788750456.

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

It is not a de Polignac number, because 654057887 - 2²⁶ = 586949023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654057889) 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 in 3 ways as a sum of consecutive naturals, for example, 46718414 + ... + 46718427.

It is an arithmetic number, because the mean of its divisors is an integer number (186873684).

Almost surely, 2^654057887 is an apocalyptic number.

654057887 is a deficient number, since it is larger than the sum of its proper divisors (93436849).

654057887 is an equidigital number, since it uses as much as digits as its factorization.

654057887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93436848.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The square root of 654057887 is about 25574.5554604572. Note that the first 3 decimals coincide. The cubic root of 654057887 is about 868.0379827044.

The spelling of 654057887 in words is "six hundred fifty-four million, fifty-seven thousand, eight hundred eighty-seven".