665503036 has 24 divisors (see below), whose sum is σ = 1276971696. Its totient is φ = 300961920.

The previous prime is 665502989. The next prime is 665503037. The reversal of 665503036 is 630305566.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 665502992 and 665503010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665503037) 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, 29721 + ... + 47056.

It is an arithmetic number, because the mean of its divisors is an integer number (53207154).

Almost surely, 2^665503036 is an apocalyptic number.

It is an amenable number.

665503036 is a deficient number, since it is larger than the sum of its proper divisors (611468660).

665503036 is a wasteful number, since it uses less digits than its factorization.

665503036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76989 (or 76987 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 34.

The square root of 665503036 is about 25797.3455223595. The cubic root of 665503036 is about 873.0719062250.

The spelling of 665503036 in words is "six hundred sixty-five million, five hundred three thousand, thirty-six".