654448897 has 4 divisors (see below), whose sum is σ = 656426416. Its totient is φ = 652471380.

The previous prime is 654448891. The next prime is 654448903. The reversal of 654448897 is 798844456.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (654448891) and next prime (654448903).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654448897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654448891) 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, 988263 + ... + 988924.

It is an arithmetic number, because the mean of its divisors is an integer number (164106604).

Almost surely, 2^654448897 is an apocalyptic number.

It is an amenable number.

654448897 is a deficient number, since it is larger than the sum of its proper divisors (1977519).

654448897 is a wasteful number, since it uses less digits than its factorization.

654448897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977518.

The product of its digits is 7741440, while the sum is 55.

The square root of 654448897 is about 25582.1988304368. The cubic root of 654448897 is about 868.2109255610.

The spelling of 654448897 in words is "six hundred fifty-four million, four hundred forty-eight thousand, eight hundred ninety-seven".