1061265564 has 36 divisors (see below), whose sum is σ = 2782003224. Its totient is φ = 353754864.

The previous prime is 1061265497. The next prime is 1061265571. The reversal of 1061265564 is 4655621601.

1061265564 is a `hidden beast` number, since 10 + 61 + 26 + 5 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1061265564² = 2252569194664476192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 544947 + ... + 546890.

Almost surely, 2^1061265564 is an apocalyptic number.

It is an amenable number.

1061265564 is an abundant number, since it is smaller than the sum of its proper divisors (1720737660).

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

1061265564 is a wasteful number, since it uses less digits than its factorization.

1061265564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091856 (or 1091842 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1061265564 is about 32577.0711390696. The cubic root of 1061265564 is about 1020.0184425731.

It can be divided in two parts, 10612 and 65564, that added together give a square (76176 = 276²).

The spelling of 1061265564 in words is "one billion, sixty-one million, two hundred sixty-five thousand, five hundred sixty-four".