85007740 has 12 divisors (see below), whose sum is σ = 178516296. Its totient is φ = 34003088.

The previous prime is 85007717. The next prime is 85007743. The reversal of 85007740 is 4770058.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85007743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125174 + ... + 2125213.

It is an arithmetic number, because the mean of its divisors is an integer number (14876358).

Almost surely, 2^85007740 is an apocalyptic number.

It is an amenable number.

85007740 is an abundant number, since it is smaller than the sum of its proper divisors (93508556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85007740 is a wasteful number, since it uses less digits than its factorization.

85007740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250396 (or 4250394 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 85007740 is about 9219.9642081735. The cubic root of 85007740 is about 439.6963124820.

Adding to 85007740 its reverse (4770058), we get a palindrome (89777798).

The spelling of 85007740 in words is "eighty-five million, seven thousand, seven hundred forty".