85761642 has 16 divisors (see below), whose sum is σ = 177438240. Its totient is φ = 27601392.

The previous prime is 85761631. The next prime is 85761647. The reversal of 85761642 is 24616758.

It is a self number, because there is not a number n which added to its sum of digits gives 85761642.

It is not an unprimeable number, because it can be changed into a prime (85761647) 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, 246268 + ... + 246615.

It is an arithmetic number, because the mean of its divisors is an integer number (11089890).

Almost surely, 2^85761642 is an apocalyptic number.

85761642 is an abundant number, since it is smaller than the sum of its proper divisors (91676598).

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

85761642 is a wasteful number, since it uses less digits than its factorization.

85761642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492917.

The product of its digits is 80640, while the sum is 39.

The square root of 85761642 is about 9260.7581763050. The cubic root of 85761642 is about 440.9923230239.

The spelling of 85761642 in words is "eighty-five million, seven hundred sixty-one thousand, six hundred forty-two".