772706121 has 12 divisors (see below), whose sum is σ = 1132451376. Its totient is φ = 468306520.

The previous prime is 772706119. The next prime is 772706149. The reversal of 772706121 is 121607277.

It is a happy number.

772706121 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 772706121 - 2¹ = 772706119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (772706191) 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, 1063971 + ... + 1064696.

It is an arithmetic number, because the mean of its divisors is an integer number (94370948).

Almost surely, 2^772706121 is an apocalyptic number.

It is an amenable number.

772706121 is a deficient number, since it is larger than the sum of its proper divisors (359745255).

772706121 is a wasteful number, since it uses less digits than its factorization.

772706121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128692 (or 2128681 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 772706121 is about 27797.5920000276. The cubic root of 772706121 is about 917.6381292134.

The spelling of 772706121 in words is "seven hundred seventy-two million, seven hundred six thousand, one hundred twenty-one".