12619771 has 4 divisors (see below), whose sum is σ = 12629232. Its totient is φ = 12610312.

The previous prime is 12619757. The next prime is 12619787. The reversal of 12619771 is 17791621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12619771 - 2⁷ = 12619643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12619721) 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, 2320 + ... + 5533.

It is an arithmetic number, because the mean of its divisors is an integer number (3157308).

Almost surely, 2^12619771 is an apocalyptic number.

12619771 is a deficient number, since it is larger than the sum of its proper divisors (9461).

12619771 is an equidigital number, since it uses as much as digits as its factorization.

12619771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9460.

The product of its digits is 5292, while the sum is 34.

The square root of 12619771 is about 3552.4317023695. The cubic root of 12619771 is about 232.8183237526.

The spelling of 12619771 in words is "twelve million, six hundred nineteen thousand, seven hundred seventy-one".