12770987 has 4 divisors (see below), whose sum is σ = 12828480. Its totient is φ = 12713496.

The previous prime is 12770971. The next prime is 12770999. The reversal of 12770987 is 78907721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78907721 = 59 ⋅1337419.

It is a cyclic number.

It is not a de Polignac number, because 12770987 - 2⁴ = 12770971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12770917) 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, 28412 + ... + 28857.

It is an arithmetic number, because the mean of its divisors is an integer number (3207120).

Almost surely, 2^12770987 is an apocalyptic number.

12770987 is a deficient number, since it is larger than the sum of its proper divisors (57493).

12770987 is an equidigital number, since it uses as much as digits as its factorization.

12770987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57492.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 12770987 is about 3573.6517737463. The cubic root of 12770987 is about 233.7445467572.

The spelling of 12770987 in words is "twelve million, seven hundred seventy thousand, nine hundred eighty-seven".