12206690 has 8 divisors (see below), whose sum is σ = 21972060. Its totient is φ = 4882672.

The previous prime is 12206681. The next prime is 12206713. The reversal of 12206690 is 9660221.

It can be written as a sum of positive squares in 2 ways, for example, as 11785489 + 421201 = 3433^2 + 649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12206690² = 298006561512200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610325 + ... + 610344.

Almost surely, 2^12206690 is an apocalyptic number.

12206690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12206690 is a deficient number, since it is larger than the sum of its proper divisors (9765370).

12206690 is a wasteful number, since it uses less digits than its factorization.

12206690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220676.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 12206690 is about 3493.8073787775. The cubic root of 12206690 is about 230.2498230651.

The spelling of 12206690 in words is "twelve million, two hundred six thousand, six hundred ninety".