85111634 has 4 divisors (see below), whose sum is σ = 127667454. Its totient is φ = 42555816.

The previous prime is 85111633. The next prime is 85111657. The reversal of 85111634 is 43611158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43611158 = 2 ⋅21805579.

It can be written as a sum of positive squares in only one way, i.e., 82755409 + 2356225 = 9097^2 + 1535^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85111597 and 85111606.

It is not an unprimeable number, because it can be changed into a prime (85111633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21277907 + ... + 21277910.

Almost surely, 2^85111634 is an apocalyptic number.

85111634 is a deficient number, since it is larger than the sum of its proper divisors (42555820).

85111634 is a wasteful number, since it uses less digits than its factorization.

85111634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42555819.

The product of its digits is 2880, while the sum is 29.

The square root of 85111634 is about 9225.5966744704. The cubic root of 85111634 is about 439.8753675931.

The spelling of 85111634 in words is "eighty-five million, one hundred eleven thousand, six hundred thirty-four".