87022071 has 12 divisors (see below), whose sum is σ = 132314520. Its totient is φ = 54961200.

The previous prime is 87022063. The next prime is 87022123. The reversal of 87022071 is 17022078.

It is not a de Polignac number, because 87022071 - 2³ = 87022063 is a prime.

It is a super-2 number, since 2×87022071² = 15145681682258082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87022171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254280 + ... + 254621.

It is an arithmetic number, because the mean of its divisors is an integer number (11026210).

Almost surely, 2^87022071 is an apocalyptic number.

87022071 is a deficient number, since it is larger than the sum of its proper divisors (45292449).

87022071 is a wasteful number, since it uses less digits than its factorization.

87022071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508926 (or 508923 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 87022071 is about 9328.5621078492. The cubic root of 87022071 is about 443.1422293660.

The spelling of 87022071 in words is "eighty-seven million, twenty-two thousand, seventy-one".