85779682 has 4 divisors (see below), whose sum is σ = 128669526. Its totient is φ = 42889840.

The previous prime is 85779677. The next prime is 85779691. The reversal of 85779682 is 28697758.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28697758 = 2 ⋅14348879.

It can be written as a sum of positive squares in only one way, i.e., 72097081 + 13682601 = 8491^2 + 3699^2 .

It is a super-2 number, since 2×85779682² = 14716307688042248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21444919 + ... + 21444922.

Almost surely, 2^85779682 is an apocalyptic number.

85779682 is a deficient number, since it is larger than the sum of its proper divisors (42889844).

85779682 is a wasteful number, since it uses less digits than its factorization.

85779682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42889843.

The product of its digits is 1693440, while the sum is 52.

The square root of 85779682 is about 9261.7321274155. The cubic root of 85779682 is about 441.0232418340.

The spelling of 85779682 in words is "eighty-five million, seven hundred seventy-nine thousand, six hundred eighty-two".