85840699 has 6 divisors (see below), whose sum is σ = 99855564. Its totient is φ = 73577700.

The previous prime is 85840687. The next prime is 85840709. The reversal of 85840699 is 99604858.

It is a happy number.

It is not a de Polignac number, because 85840699 - 2⁹ = 85840187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1751851 = 85840699 / (8 + 5 + 8 + 4 + 0 + 6 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85840619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 875877 + ... + 875974.

It is an arithmetic number, because the mean of its divisors is an integer number (16642594).

Almost surely, 2^85840699 is an apocalyptic number.

85840699 is a deficient number, since it is larger than the sum of its proper divisors (14014865).

85840699 is a wasteful number, since it uses less digits than its factorization.

85840699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751865 (or 1751858 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 85840699 is about 9265.0255801050. The cubic root of 85840699 is about 441.1277869372.

The spelling of 85840699 in words is "eighty-five million, eight hundred forty thousand, six hundred ninety-nine".