85061761 has 4 divisors (see below), whose sum is σ = 90065412. Its totient is φ = 80058112.

The previous prime is 85061741. The next prime is 85061777. The reversal of 85061761 is 16716058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16716058 = 2 ⋅8358029.

It can be written as a sum of positive squares in 2 ways, for example, as 67963536 + 17098225 = 8244^2 + 4135^2 .

It is a cyclic number.

It is not a de Polignac number, because 85061761 - 2¹³ = 85053569 is a prime.

It is a super-2 number, since 2×85061761² = 14471006368842242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85061731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2501800 + ... + 2501833.

It is an arithmetic number, because the mean of its divisors is an integer number (22516353).

Almost surely, 2^85061761 is an apocalyptic number.

It is an amenable number.

85061761 is a deficient number, since it is larger than the sum of its proper divisors (5003651).

85061761 is a wasteful number, since it uses less digits than its factorization.

85061761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003650.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 85061761 is about 9222.8933095857. The cubic root of 85061761 is about 439.7894326487.

The spelling of 85061761 in words is "eighty-five million, sixty-one thousand, seven hundred sixty-one".