555556667 has 4 divisors (see below), whose sum is σ = 555615600. Its totient is φ = 555497736.

The previous prime is 555556663. The next prime is 555556691. The reversal of 555556667 is 766655555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 555556667 - 2² = 555556663 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (555556663) 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, 11792 + ... + 35357.

It is an arithmetic number, because the mean of its divisors is an integer number (138903900).

Almost surely, 2^555556667 is an apocalyptic number.

555556667 is a deficient number, since it is larger than the sum of its proper divisors (58933).

555556667 is a wasteful number, since it uses less digits than its factorization.

555556667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58932.

The product of its digits is 4725000, while the sum is 50.

The square root of 555556667 is about 23570.2496168369. The cubic root of 555556667 is about 822.0712396547.

The spelling of 555556667 in words is "five hundred fifty-five million, five hundred fifty-six thousand, six hundred sixty-seven".