12750621 has 8 divisors (see below), whose sum is σ = 18308640. Its totient is φ = 7846512.

The previous prime is 12750613. The next prime is 12750637. The reversal of 12750621 is 12605721.

12750621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12750621 - 2³ = 12750613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12750591 and 12750600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12750601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163431 + ... + 163508.

It is an arithmetic number, because the mean of its divisors is an integer number (2288580).

Almost surely, 2^12750621 is an apocalyptic number.

It is an amenable number.

12750621 is a deficient number, since it is larger than the sum of its proper divisors (5558019).

12750621 is a wasteful number, since it uses less digits than its factorization.

12750621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326955.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 12750621 is about 3570.8011706058. The cubic root of 12750621 is about 233.6202291877.

The spelling of 12750621 in words is "twelve million, seven hundred fifty thousand, six hundred twenty-one".