85579620 has 48 divisors (see below), whose sum is σ = 273856128. Its totient is φ = 19560960.

The previous prime is 85579583. The next prime is 85579633. The reversal of 85579620 is 2697558.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101461 + ... + 102300.

It is an arithmetic number, because the mean of its divisors is an integer number (5705336).

Almost surely, 2^85579620 is an apocalyptic number.

It is an amenable number.

85579620 is an abundant number, since it is smaller than the sum of its proper divisors (188276508).

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

85579620 is a wasteful number, since it uses less digits than its factorization.

85579620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203780 (or 203778 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 85579620 is about 9250.9253591195. The cubic root of 85579620 is about 440.6801121145.

The spelling of 85579620 in words is "eighty-five million, five hundred seventy-nine thousand, six hundred twenty".