87771322 has 4 divisors (see below), whose sum is σ = 131656986. Its totient is φ = 43885660.

The previous prime is 87771319. The next prime is 87771329. The reversal of 87771322 is 22317778.

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., 67059721 + 20711601 = 8189^2 + 4551^2 .

It is not an unprimeable number, because it can be changed into a prime (87771329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21942829 + ... + 21942832.

Almost surely, 2^87771322 is an apocalyptic number.

87771322 is a deficient number, since it is larger than the sum of its proper divisors (43885664).

87771322 is a wasteful number, since it uses less digits than its factorization.

87771322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43885663.

The product of its digits is 32928, while the sum is 37.

The square root of 87771322 is about 9368.6350126366. The cubic root of 87771322 is about 444.4103995635.

The spelling of 87771322 in words is "eighty-seven million, seven hundred seventy-one thousand, three hundred twenty-two".