85140787 has 8 divisors (see below), whose sum is σ = 88019840. Its totient is φ = 82270080.

The previous prime is 85140773. The next prime is 85140793. The reversal of 85140787 is 78704158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85140787 is a prime.

It is a super-2 number, since 2×85140787² = 14497907221958738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85180787) 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, 24043 + ... + 27355.

It is an arithmetic number, because the mean of its divisors is an integer number (11002480).

Almost surely, 2^85140787 is an apocalyptic number.

85140787 is a deficient number, since it is larger than the sum of its proper divisors (2879053).

85140787 is a wasteful number, since it uses less digits than its factorization.

85140787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 85140787 is about 9227.1765454011. The cubic root of 85140787 is about 439.9255848670.

The spelling of 85140787 in words is "eighty-five million, one hundred forty thousand, seven hundred eighty-seven".