12750765 has 32 divisors (see below), whose sum is σ = 22311936. Its totient is φ = 6190080.

The previous prime is 12750743. The next prime is 12750797. The reversal of 12750765 is 56705721.

12750765 = 331² + 332² + ... + 420².

It is not a de Polignac number, because 12750765 - 2⁶ = 12750701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7099 + ... + 8711.

It is an arithmetic number, because the mean of its divisors is an integer number (697248).

Almost surely, 2^12750765 is an apocalyptic number.

12750765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12750765 is a deficient number, since it is larger than the sum of its proper divisors (9561171).

12750765 is a wasteful number, since it uses less digits than its factorization.

12750765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 12750765 is about 3570.8213340911. The cubic root of 12750765 is about 233.6211086530.

The spelling of 12750765 in words is "twelve million, seven hundred fifty thousand, seven hundred sixty-five".