87777412 has 12 divisors (see below), whose sum is σ = 153768076. Its totient is φ = 43843680.

The previous prime is 87777331. The next prime is 87777413. The reversal of 87777412 is 21477778.

87777412 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 26687556 + 61089856 = 5166^2 + 7816^2 .

87777412 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (87777413) 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 in 3 ways as a sum of consecutive naturals, for example, 6663 + ... + 14830.

Almost surely, 2^87777412 is an apocalyptic number.

It is an amenable number.

87777412 is a deficient number, since it is larger than the sum of its proper divisors (65990664).

87777412 is a wasteful number, since it uses less digits than its factorization.

87777412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22518 (or 22516 counting only the distinct ones).

The product of its digits is 153664, while the sum is 43.

The square root of 87777412 is about 9368.9600276658. The cubic root of 87777412 is about 444.4206777754.

The spelling of 87777412 in words is "eighty-seven million, seven hundred seventy-seven thousand, four hundred twelve".