85720299 has 16 divisors (see below), whose sum is σ = 133808640. Its totient is φ = 47787840.

The previous prime is 85720291. The next prime is 85720303. The reversal of 85720299 is 99202758.

It is not a de Polignac number, because 85720299 - 2³ = 85720291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85720299.

It is not an unprimeable number, because it can be changed into a prime (85720291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48919 + ... + 50640.

It is an arithmetic number, because the mean of its divisors is an integer number (8363040).

Almost surely, 2^85720299 is an apocalyptic number.

85720299 is a deficient number, since it is larger than the sum of its proper divisors (48088341).

85720299 is a wasteful number, since it uses less digits than its factorization.

85720299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99610.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 85720299 is about 9258.5257465754. The cubic root of 85720299 is about 440.9214487742.

The spelling of 85720299 in words is "eighty-five million, seven hundred twenty thousand, two hundred ninety-nine".