654711667 has 4 divisors (see below), whose sum is σ = 693224136. Its totient is φ = 616199200.

The previous prime is 654711647. The next prime is 654711677. The reversal of 654711667 is 766117456.

654711667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 654711667 - 2¹⁹ = 654187379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654711647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19256209 + ... + 19256242.

It is an arithmetic number, because the mean of its divisors is an integer number (173306034).

Almost surely, 2^654711667 is an apocalyptic number.

654711667 is a deficient number, since it is larger than the sum of its proper divisors (38512469).

654711667 is a wasteful number, since it uses less digits than its factorization.

654711667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38512468.

The product of its digits is 211680, while the sum is 43.

The square root of 654711667 is about 25587.3341127989. The cubic root of 654711667 is about 868.3271094521.

The spelling of 654711667 in words is "six hundred fifty-four million, seven hundred eleven thousand, six hundred sixty-seven".