12747445 has 8 divisors (see below), whose sum is σ = 15440544. Its totient is φ = 10102224.

The previous prime is 12747437. The next prime is 12747463. The reversal of 12747445 is 54474721.

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 12747445 - 2³ = 12747437 is a prime.

It is a super-3 number, since 3×12747445³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12747445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11379 + ... + 12448.

It is an arithmetic number, because the mean of its divisors is an integer number (1930068).

Almost surely, 2^12747445 is an apocalyptic number.

It is an amenable number.

12747445 is a deficient number, since it is larger than the sum of its proper divisors (2693099).

12747445 is a wasteful number, since it uses less digits than its factorization.

12747445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23939.

The product of its digits is 31360, while the sum is 34.

The square root of 12747445 is about 3570.3564247845. The cubic root of 12747445 is about 233.6008304081.

The spelling of 12747445 in words is "twelve million, seven hundred forty-seven thousand, four hundred forty-five".