12776001 has 16 divisors (see below), whose sum is σ = 19590144. Its totient is φ = 7254864.

The previous prime is 12775991. The next prime is 12776003. The reversal of 12776001 is 10067721.

It is not a de Polignac number, because 12776001 - 2⁹ = 12775489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12776003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1686 + ... + 5328.

It is an arithmetic number, because the mean of its divisors is an integer number (1224384).

Almost surely, 2^12776001 is an apocalyptic number.

It is an amenable number.

12776001 is a deficient number, since it is larger than the sum of its proper divisors (6814143).

12776001 is a wasteful number, since it uses less digits than its factorization.

12776001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 12776001 is about 3574.3532282079. The cubic root of 12776001 is about 233.7751327986.

It can be divided in two parts, 1277600 and 1, that added together give a triangular number (1277601 = T₁₅₉₈).

The spelling of 12776001 in words is "twelve million, seven hundred seventy-six thousand, one".