1123061665 has 16 divisors (see below), whose sum is σ = 1470845376. Its totient is φ = 816408000.

The previous prime is 1123061657. The next prime is 1123061713. The reversal of 1123061665 is 5661603211.

It is not a de Polignac number, because 1123061665 - 2³ = 1123061657 is a prime.

It is a super-2 number, since 2×1123061665² = 2522535006785144450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217615 + ... + 222715.

It is an arithmetic number, because the mean of its divisors is an integer number (91927836).

Almost surely, 2^1123061665 is an apocalyptic number.

It is an amenable number.

1123061665 is a deficient number, since it is larger than the sum of its proper divisors (347783711).

1123061665 is a wasteful number, since it uses less digits than its factorization.

1123061665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9120.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1123061665 is about 33512.1122133476. The cubic root of 1123061665 is about 1039.4442497330. Note that the first 3 decimals are identical.

Adding to 1123061665 its reverse (5661603211), we get a palindrome (6784664876).

The spelling of 1123061665 in words is "one billion, one hundred twenty-three million, sixty-one thousand, six hundred sixty-five".