12620347 has 4 divisors (see below), whose sum is σ = 12736240. Its totient is φ = 12504456.

The previous prime is 12620339. The next prime is 12620359. The reversal of 12620347 is 74302621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74302621 = 409 ⋅181669.

It is a cyclic number.

It is not a de Polignac number, because 12620347 - 2³ = 12620339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12627347) 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, 57783 + ... + 58000.

It is an arithmetic number, because the mean of its divisors is an integer number (3184060).

Almost surely, 2^12620347 is an apocalyptic number.

12620347 is a deficient number, since it is larger than the sum of its proper divisors (115893).

12620347 is a wasteful number, since it uses less digits than its factorization.

12620347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115892.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 12620347 is about 3552.5127726723. The cubic root of 12620347 is about 232.8218658485.

Adding to 12620347 its reverse (74302621), we get a palindrome (86922968).

The spelling of 12620347 in words is "twelve million, six hundred twenty thousand, three hundred forty-seven".