747711666 has 48 divisors (see below), whose sum is σ = 1749471360. Its totient is φ = 229430880.

The previous prime is 747711647. The next prime is 747711667. The reversal of 747711666 is 666117747.

It is not an unprimeable number, because it can be changed into a prime (747711667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84471 + ... + 92901.

It is an arithmetic number, because the mean of its divisors is an integer number (36447320).

Almost surely, 2^747711666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747711666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874735680).

747711666 is an abundant number, since it is smaller than the sum of its proper divisors (1001759694).

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

747711666 is a wasteful number, since it uses less digits than its factorization.

747711666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8831 (or 8828 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 747711666 is about 27344.3168866951. The cubic root of 747711666 is about 907.6353152959.

The spelling of 747711666 in words is "seven hundred forty-seven million, seven hundred eleven thousand, six hundred sixty-six".