1061605061 has 4 divisors (see below), whose sum is σ = 1158114624. Its totient is φ = 965095500.

The previous prime is 1061605049. The next prime is 1061605067. The reversal of 1061605061 is 1605061601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1061605061 is a prime.

It is a super-2 number, since 2×1061605061² = 2254010611081627442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1061605061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061605067) 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, 48254765 + ... + 48254786.

It is an arithmetic number, because the mean of its divisors is an integer number (289528656).

Almost surely, 2^1061605061 is an apocalyptic number.

1061605061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1061605061 is a deficient number, since it is larger than the sum of its proper divisors (96509563).

1061605061 is an equidigital number, since it uses as much as digits as its factorization.

1061605061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96509562.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1061605061 is about 32582.2813964891. The cubic root of 1061605061 is about 1020.1271983496.

Adding to 1061605061 its reverse (1605061601), we get a palindrome (2666666662).

The spelling of 1061605061 in words is "one billion, sixty-one million, six hundred five thousand, sixty-one".