1665000567 has 12 divisors (see below), whose sum is σ = 2509566384. Its totient is φ = 1061739360.

The previous prime is 1665000539. The next prime is 1665000569. The reversal of 1665000567 is 7650005661.

It is a happy number.

It is not a de Polignac number, because 1665000567 - 2¹⁰ = 1664999543 is a prime.

It is a super-2 number, since 2×1665000567² = 5544453776220642978, 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 (1665000569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4021534 + ... + 4021947.

It is an arithmetic number, because the mean of its divisors is an integer number (209130532).

Almost surely, 2^1665000567 is an apocalyptic number.

1665000567 is a deficient number, since it is larger than the sum of its proper divisors (844565817).

1665000567 is a wasteful number, since it uses less digits than its factorization.

1665000567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8043510 (or 8043507 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1665000567 is about 40804.4184739839. The cubic root of 1665000567 is about 1185.2358938598.

The spelling of 1665000567 in words is "one billion, six hundred sixty-five million, five hundred sixty-seven", and thus it is an aban number.