6616090969 has 4 divisors (see below), whose sum is σ = 6616476900. Its totient is φ = 6615705040.

The previous prime is 6616090963. The next prime is 6616090997. The reversal of 6616090969 is 9690906166.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6263139600 + 352951369 = 79140^2 + 18787^2 .

It is a cyclic number.

It is not a de Polignac number, because 6616090969 - 2³ = 6616090961 is a prime.

It is a super-2 number, since 2×6616090969² = 87545319420166717922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6616090961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165994 + ... + 201955.

It is an arithmetic number, because the mean of its divisors is an integer number (1654119225).

Almost surely, 2^6616090969 is an apocalyptic number.

It is an amenable number.

6616090969 is a deficient number, since it is larger than the sum of its proper divisors (385931).

6616090969 is a wasteful number, since it uses less digits than its factorization.

6616090969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385930.

The product of its (nonzero) digits is 944784, while the sum is 52.

The square root of 6616090969 is about 81339.3568268154. The cubic root of 6616090969 is about 1877.3006160243.

The spelling of 6616090969 in words is "six billion, six hundred sixteen million, ninety thousand, nine hundred sixty-nine".