85563730 has 32 divisors (see below), whose sum is σ = 179345664. Its totient is φ = 28781376.

The previous prime is 85563719. The next prime is 85563739. The reversal of 85563730 is 3736558.

It is a self number, because there is not a number n which added to its sum of digits gives 85563730.

It is not an unprimeable number, because it can be changed into a prime (85563739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7822 + ... + 15241.

It is an arithmetic number, because the mean of its divisors is an integer number (5604552).

Almost surely, 2^85563730 is an apocalyptic number.

85563730 is an abundant number, since it is smaller than the sum of its proper divisors (93781934).

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

85563730 is a wasteful number, since it uses less digits than its factorization.

85563730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23130.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 85563730 is about 9250.0664862475. The cubic root of 85563730 is about 440.6528359927.

The spelling of 85563730 in words is "eighty-five million, five hundred sixty-three thousand, seven hundred thirty".