6661292 has 18 divisors (see below), whose sum is σ = 12814284. Its totient is φ = 3027640.

The previous prime is 6661279. The next prime is 6661301. The reversal of 6661292 is 2921666.

6661292 = 909² + 910² + ... + 916².

It is a super-2 number, since 2×6661292² = 88745622218528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6398 + ... + 7365.

Almost surely, 2^6661292 is an apocalyptic number.

It is an amenable number.

6661292 is a deficient number, since it is larger than the sum of its proper divisors (6152992).

6661292 is a wasteful number, since it uses less digits than its factorization.

6661292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13789 (or 13776 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 6661292 is about 2580.9478878893. The cubic root of 6661292 is about 188.1566146285.

The spelling of 6661292 in words is "six million, six hundred sixty-one thousand, two hundred ninety-two".