85280620 has 24 divisors (see below), whose sum is σ = 179295984. Its totient is φ = 34072896.

The previous prime is 85280603. The next prime is 85280621. The reversal of 85280620 is 2608258.

It is not an unprimeable number, because it can be changed into a prime (85280621) 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 7 ways as a sum of consecutive naturals, for example, 20562 + ... + 24358.

It is an arithmetic number, because the mean of its divisors is an integer number (7470666).

Almost surely, 2^85280620 is an apocalyptic number.

It is an amenable number.

85280620 is an abundant number, since it is smaller than the sum of its proper divisors (94015364).

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

85280620 is a wasteful number, since it uses less digits than its factorization.

85280620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929 (or 4927 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 85280620 is about 9234.7506734075. The cubic root of 85280620 is about 440.1662938922.

Adding to 85280620 its reverse (2608258), we get a palindrome (87888878).

The spelling of 85280620 in words is "eighty-five million, two hundred eighty thousand, six hundred twenty".