7205771061 has 12 divisors (see below), whose sum is σ = 10409969388. Its totient is φ = 4803093504.

The previous prime is 7205771059. The next prime is 7205771101. The reversal of 7205771061 is 1601775027.

7205771061 is a `hidden beast` number, since 7 + 20 + 577 + 1 + 0 + 61 = 666.

7205771061 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4092800625 + 3112970436 = 63975^2 + 55794^2 .

It is not a de Polignac number, because 7205771061 - 2¹ = 7205771059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7205771761) 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, 1141 + ... + 120053.

It is an arithmetic number, because the mean of its divisors is an integer number (867497449).

Almost surely, 2^7205771061 is an apocalyptic number.

It is an amenable number.

7205771061 is a deficient number, since it is larger than the sum of its proper divisors (3204198327).

7205771061 is a wasteful number, since it uses less digits than its factorization.

7205771061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125652 (or 125649 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The square root of 7205771061 is about 84886.8132338586. The cubic root of 7205771061 is about 1931.4945479245.

The spelling of 7205771061 in words is "seven billion, two hundred five million, seven hundred seventy-one thousand, sixty-one".