85590778 has 16 divisors (see below), whose sum is σ = 158014080. Its totient is φ = 33860016.

The previous prime is 85590773. The next prime is 85590781. The reversal of 85590778 is 87709558.

It is not an unprimeable number, because it can be changed into a prime (85590773) 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, 234958 + ... + 235321.

It is an arithmetic number, because the mean of its divisors is an integer number (9875880).

Almost surely, 2^85590778 is an apocalyptic number.

85590778 is a deficient number, since it is larger than the sum of its proper divisors (72423302).

85590778 is a wasteful number, since it uses less digits than its factorization.

85590778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470301.

The product of its (nonzero) digits is 705600, while the sum is 49.

The square root of 85590778 is about 9251.5284142676. The cubic root of 85590778 is about 440.6992634616.

It can be divided in two parts, 85590 and 778, that added together give a palindrome (86368).

The spelling of 85590778 in words is "eighty-five million, five hundred ninety thousand, seven hundred seventy-eight".