667365550 has 12 divisors (see below), whose sum is σ = 1241300016. Its totient is φ = 266946200.

The previous prime is 667365541. The next prime is 667365553. The reversal of 667365550 is 55563766.

It is a junction number, because it is equal to n+sod(n) for n = 667365497 and 667365506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667365553) 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, 6673606 + ... + 6673705.

It is an arithmetic number, because the mean of its divisors is an integer number (103441668).

Almost surely, 2^667365550 is an apocalyptic number.

667365550 is a deficient number, since it is larger than the sum of its proper divisors (573934466).

667365550 is a wasteful number, since it uses less digits than its factorization.

667365550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13347323 (or 13347318 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 43.

The square root of 667365550 is about 25833.4192471690. The cubic root of 667365550 is about 873.8856235395.

The spelling of 667365550 in words is "six hundred sixty-seven million, three hundred sixty-five thousand, five hundred fifty".