12770578 has 4 divisors (see below), whose sum is σ = 19155870. Its totient is φ = 6385288.

The previous prime is 12770567. The next prime is 12770579. The reversal of 12770578 is 87507721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12723489 + 47089 = 3567^2 + 217^2 .

It is not an unprimeable number, because it can be changed into a prime (12770579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3192643 + ... + 3192646.

Almost surely, 2^12770578 is an apocalyptic number.

12770578 is a deficient number, since it is larger than the sum of its proper divisors (6385292).

12770578 is an equidigital number, since it uses as much as digits as its factorization.

12770578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6385291.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 12770578 is about 3573.5945489101. The cubic root of 12770578 is about 233.7420514517.

The spelling of 12770578 in words is "twelve million, seven hundred seventy thousand, five hundred seventy-eight".