85672780 has 24 divisors (see below), whose sum is σ = 184302720. Its totient is φ = 33432960.

The previous prime is 85672777. The next prime is 85672787. The reversal of 85672780 is 8727658.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85672787) 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, 51420 + ... + 53059.

It is an arithmetic number, because the mean of its divisors is an integer number (7679280).

Almost surely, 2^85672780 is an apocalyptic number.

It is an amenable number.

85672780 is an abundant number, since it is smaller than the sum of its proper divisors (98629940).

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

85672780 is a wasteful number, since it uses less digits than its factorization.

85672780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104529 (or 104527 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 85672780 is about 9255.9591615348. The cubic root of 85672780 is about 440.8399588612.

The spelling of 85672780 in words is "eighty-five million, six hundred seventy-two thousand, seven hundred eighty".