1061061560 has 128 divisors (see below), whose sum is σ = 2637230400. Its totient is φ = 381849600.

The previous prime is 1061061557. The next prime is 1061061569. The reversal of 1061061560 is 651601601.

It is a super-2 number, since 2×1061061560² = 2251703268219267200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061061569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4674167 + ... + 4674393.

Almost surely, 2^1061061560 is an apocalyptic number.

1061061560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1061061560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318615200).

1061061560 is an abundant number, since it is smaller than the sum of its proper divisors (1576168840).

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

1061061560 is a wasteful number, since it uses less digits than its factorization.

1061061560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 437 counting only the distinct ones).

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

The square root of 1061061560 is about 32573.9398906549. The cubic root of 1061061560 is about 1019.9530799896.

The spelling of 1061061560 in words is "one billion, sixty-one million, sixty-one thousand, five hundred sixty".