85196640 has 48 divisors (see below), whose sum is σ = 268370928. Its totient is φ = 22718976.

The previous prime is 85196611. The next prime is 85196653. The reversal of 85196640 is 4669158.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88267 + ... + 89226.

It is an arithmetic number, because the mean of its divisors is an integer number (5591061).

Almost surely, 2^85196640 is an apocalyptic number.

85196640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85196640 is an abundant number, since it is smaller than the sum of its proper divisors (183174288).

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

85196640 is a wasteful number, since it uses less digits than its factorization.

85196640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177511 (or 177503 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 85196640 is about 9230.2025979932. The cubic root of 85196640 is about 440.0217620091.

The spelling of 85196640 in words is "eighty-five million, one hundred ninety-six thousand, six hundred forty".