663477670 has 16 divisors (see below), whose sum is σ = 1195537968. Its totient is φ = 265107040.

The previous prime is 663477613. The next prime is 663477671. The reversal of 663477670 is 76774366.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 663477670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663477671) 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, 25561 + ... + 44500.

It is an arithmetic number, because the mean of its divisors is an integer number (74721123).

Almost surely, 2^663477670 is an apocalyptic number.

663477670 is a deficient number, since it is larger than the sum of its proper divisors (532060298).

663477670 is a wasteful number, since it uses less digits than its factorization.

663477670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71015.

The product of its (nonzero) digits is 889056, while the sum is 46.

The square root of 663477670 is about 25758.0602918776. The cubic root of 663477670 is about 872.1853152073.

The spelling of 663477670 in words is "six hundred sixty-three million, four hundred seventy-seven thousand, six hundred seventy".