87189796 has 6 divisors (see below), whose sum is σ = 152582150. Its totient is φ = 43594896.

The previous prime is 87189779. The next prime is 87189811. The reversal of 87189796 is 69798178.

It can be written as a sum of positive squares in only one way, i.e., 87160896 + 28900 = 9336^2 + 170^2 .

It is an unprimeable number.

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, 10898721 + ... + 10898728.

Almost surely, 2^87189796 is an apocalyptic number.

It is an amenable number.

87189796 is a deficient number, since it is larger than the sum of its proper divisors (65392354).

87189796 is a wasteful number, since it uses less digits than its factorization.

87189796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21797453 (or 21797451 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 55.

The square root of 87189796 is about 9337.5476437874. The cubic root of 87189796 is about 443.4267484886.

The spelling of 87189796 in words is "eighty-seven million, one hundred eighty-nine thousand, seven hundred ninety-six".