5665207770 has 128 divisors (see below), whose sum is σ = 15967929600. Its totient is φ = 1425309696.

The previous prime is 5665207753. The next prime is 5665207771. The reversal of 5665207770 is 777025665.

5665207770 is a `hidden beast` number, since 56 + 6 + 520 + 7 + 7 + 70 = 666.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5665207771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1316262 + ... + 1320558.

It is an arithmetic number, because the mean of its divisors is an integer number (124749450).

Almost surely, 2^5665207770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5665207770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7983964800).

5665207770 is an abundant number, since it is smaller than the sum of its proper divisors (10302721830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5665207770 is a wasteful number, since it uses less digits than its factorization.

5665207770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589 (or 4583 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The square root of 5665207770 is about 75267.5744926060. The cubic root of 5665207770 is about 1782.6740696058.

The spelling of 5665207770 in words is "five billion, six hundred sixty-five million, two hundred seven thousand, seven hundred seventy".