1116763661 has 20 divisors (see below), whose sum is σ = 1231575564. Its totient is φ = 1012377600.

The previous prime is 1116763649. The next prime is 1116763667. The reversal of 1116763661 is 1663676111.

It can be written as a sum of positive squares in 10 ways, for example, as 1112222500 + 4541161 = 33350^2 + 2131^2 .

It is not a de Polignac number, because 1116763661 - 2¹⁴ = 1116747277 is a prime.

It is a super-2 number, since 2×1116763661² = 2494322149060245842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116763667) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1741901 + ... + 1742541.

Almost surely, 2^1116763661 is an apocalyptic number.

It is an amenable number.

1116763661 is a deficient number, since it is larger than the sum of its proper divisors (114811903).

1116763661 is an frugal number, since it uses more digits than its factorization.

1116763661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 715 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 1116763661 is about 33418.0140193878. The cubic root of 1116763661 is about 1037.4975773108.

The spelling of 1116763661 in words is "one billion, one hundred sixteen million, seven hundred sixty-three thousand, six hundred sixty-one".