85487722 has 4 divisors (see below), whose sum is σ = 128231586. Its totient is φ = 42743860.

The previous prime is 85487693. The next prime is 85487729. The reversal of 85487722 is 22778458.

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., 45279441 + 40208281 = 6729^2 + 6341^2 .

It is a super-2 number, since 2×85487722² = 14616301225498568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85487729) by changing a digit.

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, 21371929 + ... + 21371932.

Almost surely, 2^85487722 is an apocalyptic number.

85487722 is a deficient number, since it is larger than the sum of its proper divisors (42743864).

85487722 is a wasteful number, since it uses less digits than its factorization.

85487722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42743863.

The product of its digits is 250880, while the sum is 43.

The square root of 85487722 is about 9245.9570624138. The cubic root of 85487722 is about 440.5223170482.

The spelling of 85487722 in words is "eighty-five million, four hundred eighty-seven thousand, seven hundred twenty-two".