87422564 has 24 divisors (see below), whose sum is σ = 158913720. Its totient is φ = 42045696.

The previous prime is 87422557. The next prime is 87422567. The reversal of 87422564 is 46522478.

It can be written as a sum of positive squares in 4 ways, for example, as 1304164 + 86118400 = 1142^2 + 9280^2 .

It is not an unprimeable number, because it can be changed into a prime (87422567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9854 + ... + 16490.

It is an arithmetic number, because the mean of its divisors is an integer number (6621405).

Almost surely, 2^87422564 is an apocalyptic number.

It is an amenable number.

87422564 is a deficient number, since it is larger than the sum of its proper divisors (71491156).

87422564 is a wasteful number, since it uses less digits than its factorization.

87422564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767 (or 6765 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 87422564 is about 9350.0034224593. The cubic root of 87422564 is about 443.8209989155.

It can be divided in two parts, 874225 and 64, that multiplied together give a square (55950400 = 7480²).

The spelling of 87422564 in words is "eighty-seven million, four hundred twenty-two thousand, five hundred sixty-four".