654966849 has 8 divisors (see below), whose sum is σ = 876536640. Its totient is φ = 435020816.

The previous prime is 654966839. The next prime is 654966869. The reversal of 654966849 is 948669456.

It is a happy number.

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 654966849 - 2⁵ = 654966817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (654966839) 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, 404997 + ... + 406610.

It is an arithmetic number, because the mean of its divisors is an integer number (109567080).

Almost surely, 2^654966849 is an apocalyptic number.

It is an amenable number.

654966849 is a deficient number, since it is larger than the sum of its proper divisors (221569791).

654966849 is a wasteful number, since it uses less digits than its factorization.

654966849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811879.

The product of its digits is 11197440, while the sum is 57.

The square root of 654966849 is about 25592.3201175665. The cubic root of 654966849 is about 868.4399085553.

The spelling of 654966849 in words is "six hundred fifty-four million, nine hundred sixty-six thousand, eight hundred forty-nine".