1065166623 has 12 divisors (see below), whose sum is σ = 1539958680. Its totient is φ = 709472016.

The previous prime is 1065166621. The next prime is 1065166649. The reversal of 1065166623 is 3266615601.

It is not a de Polignac number, because 1065166623 - 2¹ = 1065166621 is a prime.

It is a super-2 number, since 2×1065166623² = 2269159869506448258, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065166621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42588 + ... + 62801.

It is an arithmetic number, because the mean of its divisors is an integer number (128329890).

Almost surely, 2^1065166623 is an apocalyptic number.

1065166623 is a deficient number, since it is larger than the sum of its proper divisors (474792057).

1065166623 is a wasteful number, since it uses less digits than its factorization.

1065166623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106518 (or 106515 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1065166623 is about 32636.8905228424. The cubic root of 1065166623 is about 1021.2667278269.

The spelling of 1065166623 in words is "one billion, sixty-five million, one hundred sixty-six thousand, six hundred twenty-three".