1061161722 has 60 divisors (see below), whose sum is σ = 2402134350. Its totient is φ = 350132544.

The previous prime is 1061161679. The next prime is 1061161727. The reversal of 1061161722 is 2271611601.

It is a happy number.

1061161722 is a `hidden beast` number, since 10 + 6 + 11 + 617 + 22 = 666.

1061161722 is digitally balanced in base 2, 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 3 ways, for example, as 1025984961 + 35176761 = 32031^2 + 5931^2 .

It is a super-2 number, since 2×1061161722² = 2252128400476010568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1061161727) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3040404 + ... + 3040752.

Almost surely, 2^1061161722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1061161722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201067175).

1061161722 is an abundant number, since it is smaller than the sum of its proper divisors (1340972628).

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

1061161722 is an equidigital number, since it uses as much as digits as its factorization.

1061161722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1061161722 is about 32575.4773103941. The cubic root of 1061161722 is about 1019.9851727948.

The spelling of 1061161722 in words is "one billion, sixty-one million, one hundred sixty-one thousand, seven hundred twenty-two".