85240777 has 4 divisors (see below), whose sum is σ = 85854160. Its totient is φ = 84627396.

The previous prime is 85240769. The next prime is 85240811. The reversal of 85240777 is 77704258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85240777 - 2³ = 85240769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85240717) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 306483 + ... + 306760.

It is an arithmetic number, because the mean of its divisors is an integer number (21463540).

Almost surely, 2^85240777 is an apocalyptic number.

It is an amenable number.

85240777 is a deficient number, since it is larger than the sum of its proper divisors (613383).

85240777 is a wasteful number, since it uses less digits than its factorization.

85240777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613382.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 85240777 is about 9232.5931893483. The cubic root of 85240777 is about 440.0977348318.

The spelling of 85240777 in words is "eighty-five million, two hundred forty thousand, seven hundred seventy-seven".