12685490 has 8 divisors (see below), whose sum is σ = 22833900. Its totient is φ = 5074192.

The previous prime is 12685481. The next prime is 12685501. The reversal of 12685490 is 9458621.

It can be written as a sum of positive squares in 2 ways, for example, as 12482089 + 203401 = 3533^2 + 451^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12685490.

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, 634265 + ... + 634284.

Almost surely, 2^12685490 is an apocalyptic number.

12685490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12685490 is a deficient number, since it is larger than the sum of its proper divisors (10148410).

12685490 is a wasteful number, since it uses less digits than its factorization.

12685490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268556.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 12685490 is about 3561.6695523308. The cubic root of 12685490 is about 233.2217675262.

The spelling of 12685490 in words is "twelve million, six hundred eighty-five thousand, four hundred ninety".