654944613 has 16 divisors (see below), whose sum is σ = 904288320. Its totient is φ = 421145984.

The previous prime is 654944603. The next prime is 654944627. The reversal of 654944613 is 316449456.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 654944613 - 2⁴ = 654944597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654944603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97945 + ... + 104417.

It is an arithmetic number, because the mean of its divisors is an integer number (56518020).

Almost surely, 2^654944613 is an apocalyptic number.

It is an amenable number.

654944613 is a deficient number, since it is larger than the sum of its proper divisors (249343707).

654944613 is a wasteful number, since it uses less digits than its factorization.

654944613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7668.

The product of its digits is 311040, while the sum is 42.

The square root of 654944613 is about 25591.8856866781. The cubic root of 654944613 is about 868.4300806541.

It can be divided in two parts, 65494 and 4613, that added together give a palindrome (70107).

The spelling of 654944613 in words is "six hundred fifty-four million, nine hundred forty-four thousand, six hundred thirteen".