654663361 has 6 divisors (see below), whose sum is σ = 719588786. Its totient is φ = 595148400.

The previous prime is 654663341. The next prime is 654663389. The reversal of 654663361 is 163366456.

It can be written as a sum of positive squares in only one way, i.e., 481583025 + 173080336 = 21945^2 + 13156^2 .

It is a de Polignac number, because none of the positive numbers 2^k-654663361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654663341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2705100 + ... + 2705341.

Almost surely, 2^654663361 is an apocalyptic number.

It is an amenable number.

654663361 is a deficient number, since it is larger than the sum of its proper divisors (64925425).

654663361 is a wasteful number, since it uses less digits than its factorization.

654663361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410463 (or 5410452 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

The square root of 654663361 is about 25586.3901517975. The cubic root of 654663361 is about 868.3057532617.

The spelling of 654663361 in words is "six hundred fifty-four million, six hundred sixty-three thousand, three hundred sixty-one".