87777332 has 6 divisors (see below), whose sum is σ = 153610338. Its totient is φ = 43888664.

The previous prime is 87777331. The next prime is 87777413. The reversal of 87777332 is 23377778.

87777332 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 only one way, i.e., 86229796 + 1547536 = 9286^2 + 1244^2 .

87777332 is strictly pandigital in base 9.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87777331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10972163 + ... + 10972170.

It is an arithmetic number, because the mean of its divisors is an integer number (25601723).

Almost surely, 2^87777332 is an apocalyptic number.

It is an amenable number.

87777332 is a deficient number, since it is larger than the sum of its proper divisors (65833006).

87777332 is a wasteful number, since it uses less digits than its factorization.

87777332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21944337 (or 21944335 counting only the distinct ones).

The product of its digits is 345744, while the sum is 44.

The square root of 87777332 is about 9368.9557582476. The cubic root of 87777332 is about 444.4205427609.

The spelling of 87777332 in words is "eighty-seven million, seven hundred seventy-seven thousand, three hundred thirty-two".