662816745 has 12 divisors (see below), whose sum is σ = 1148882436. Its totient is φ = 353502240.

The previous prime is 662816717. The next prime is 662816747. The reversal of 662816745 is 547618266.

662816745 is a `hidden beast` number, since 6 + 628 + 16 + 7 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 119180889 + 543635856 = 10917^2 + 23316^2 .

It is not a de Polignac number, because 662816745 - 2²⁰ = 661768169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 14729261 = 662816745 / (6 + 6 + 2 + 8 + 1 + 6 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 662816745.

It is not an unprimeable number, because it can be changed into a prime (662816747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7364586 + ... + 7364675.

It is an arithmetic number, because the mean of its divisors is an integer number (95740203).

Almost surely, 2^662816745 is an apocalyptic number.

It is an amenable number.

662816745 is a deficient number, since it is larger than the sum of its proper divisors (486065691).

662816745 is a wasteful number, since it uses less digits than its factorization.

662816745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14729272 (or 14729269 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 662816745 is about 25745.2276160068. The cubic root of 662816745 is about 871.8956091016.

The spelling of 662816745 in words is "six hundred sixty-two million, eight hundred sixteen thousand, seven hundred forty-five".