85720582 has 4 divisors (see below), whose sum is σ = 128580876. Its totient is φ = 42860290.

The previous prime is 85720573. The next prime is 85720631. The reversal of 85720582 is 28502758.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28502758 = 2 ⋅14251379.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21430144 + ... + 21430147.

It is an arithmetic number, because the mean of its divisors is an integer number (32145219).

Almost surely, 2^85720582 is an apocalyptic number.

85720582 is a deficient number, since it is larger than the sum of its proper divisors (42860294).

85720582 is a wasteful number, since it uses less digits than its factorization.

85720582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42860293.

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 85720582 is about 9258.5410297735. The cubic root of 85720582 is about 440.9219339982.

The spelling of 85720582 in words is "eighty-five million, seven hundred twenty thousand, five hundred eighty-two".