12770815 has 8 divisors (see below), whose sum is σ = 15344640. Its totient is φ = 10203552.

The previous prime is 12770801. The next prime is 12770837. The reversal of 12770815 is 51807721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12770815 - 2¹⁹ = 12246527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5397 + ... + 7393.

It is an arithmetic number, because the mean of its divisors is an integer number (1918080).

Almost surely, 2^12770815 is an apocalyptic number.

12770815 is a deficient number, since it is larger than the sum of its proper divisors (2573825).

12770815 is a wasteful number, since it uses less digits than its factorization.

12770815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 12770815 is about 3573.6277086457. The cubic root of 12770815 is about 233.7434973931.

The spelling of 12770815 in words is "twelve million, seven hundred seventy thousand, eight hundred fifteen".