747707747 has 4 divisors (see below), whose sum is σ = 755110896. Its totient is φ = 740304600.

The previous prime is 747707731. The next prime is 747707749.

It is a happy number.

747707747 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 747707747 - 2⁴ = 747707731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747707695 and 747707704.

It is not an unprimeable number, because it can be changed into a prime (747707749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3701423 + ... + 3701624.

It is an arithmetic number, because the mean of its divisors is an integer number (188777724).

Almost surely, 2^747707747 is an apocalyptic number.

747707747 is a deficient number, since it is larger than the sum of its proper divisors (7403149).

747707747 is a wasteful number, since it uses less digits than its factorization.

747707747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403148.

The product of its (nonzero) digits is 1882384, while the sum is 50.

The square root of 747707747 is about 27344.2452263726. The cubic root of 747707747 is about 907.6337295558.

The spelling of 747707747 in words is "seven hundred forty-seven million, seven hundred seven thousand, seven hundred forty-seven".