654863897 has 4 divisors (see below), whose sum is σ = 659200896. Its totient is φ = 650526900.

The previous prime is 654863857. The next prime is 654863903. The reversal of 654863897 is 798368456.

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 a cyclic number.

It is not a de Polignac number, because 654863897 - 2¹² = 654859801 is a prime.

It is a super-3 number, since 3×654863897³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654863837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2168273 + ... + 2168574.

It is an arithmetic number, because the mean of its divisors is an integer number (164800224).

Almost surely, 2^654863897 is an apocalyptic number.

It is an amenable number.

654863897 is a deficient number, since it is larger than the sum of its proper divisors (4336999).

654863897 is a wasteful number, since it uses less digits than its factorization.

654863897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336998.

The product of its digits is 8709120, while the sum is 56.

The square root of 654863897 is about 25590.3086538635. The cubic root of 654863897 is about 868.3944038041.

The spelling of 654863897 in words is "six hundred fifty-four million, eight hundred sixty-three thousand, eight hundred ninety-seven".