674066655 has 24 divisors (see below), whose sum is σ = 1182465648. Its totient is φ = 355168896.

The previous prime is 674066651. The next prime is 674066671. The reversal of 674066655 is 556660476.

It is not a de Polignac number, because 674066655 - 2² = 674066651 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 674066655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674066651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86502 + ... + 93971.

It is an arithmetic number, because the mean of its divisors is an integer number (49269402).

Almost surely, 2^674066655 is an apocalyptic number.

674066655 is a deficient number, since it is larger than the sum of its proper divisors (508398993).

674066655 is a wasteful number, since it uses less digits than its factorization.

674066655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180567 (or 180564 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The square root of 674066655 is about 25962.7936670921. The cubic root of 674066655 is about 876.8008212885.

The spelling of 674066655 in words is "six hundred seventy-four million, sixty-six thousand, six hundred fifty-five".