654664247 has 8 divisors (see below), whose sum is σ = 694383360. Its totient is φ = 615471480.

The previous prime is 654664217. The next prime is 654664253. The reversal of 654664247 is 742466456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 654664247 - 2⁸ = 654663991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654664198 and 654664207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654664217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129023 + ... + 134000.

It is an arithmetic number, because the mean of its divisors is an integer number (86797920).

Almost surely, 2^654664247 is an apocalyptic number.

654664247 is a deficient number, since it is larger than the sum of its proper divisors (39719113).

654664247 is a wasteful number, since it uses less digits than its factorization.

654664247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263173.

The product of its digits is 967680, while the sum is 44.

The square root of 654664247 is about 25586.4074656838. The cubic root of 654664247 is about 868.3061449737.

The spelling of 654664247 in words is "six hundred fifty-four million, six hundred sixty-four thousand, two hundred forty-seven".