920772747 has 6 divisors (see below), whose sum is σ = 1330005092. Its totient is φ = 613848492.

The previous prime is 920772739. The next prime is 920772773. The reversal of 920772747 is 747277029.

It is a happy number.

920772747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 920772747 - 2³ = 920772739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920772647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51154033 + ... + 51154050.

Almost surely, 2^920772747 is an apocalyptic number.

920772747 is a deficient number, since it is larger than the sum of its proper divisors (409232345).

920772747 is a wasteful number, since it uses less digits than its factorization.

920772747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102308089 (or 102308086 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 920772747 is about 30344.2374595243. The cubic root of 920772747 is about 972.8610562087.

The spelling of 920772747 in words is "nine hundred twenty million, seven hundred seventy-two thousand, seven hundred forty-seven".