85018961 has 4 divisors (see below), whose sum is σ = 85095792. Its totient is φ = 84942132.

The previous prime is 85018951. The next prime is 85018963. The reversal of 85018961 is 16981058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85018961 - 2⁶ = 85018897 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85018963) 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, 36731 + ... + 38976.

It is an arithmetic number, because the mean of its divisors is an integer number (21273948).

Almost surely, 2^85018961 is an apocalyptic number.

It is an amenable number.

85018961 is a deficient number, since it is larger than the sum of its proper divisors (76831).

85018961 is a wasteful number, since it uses less digits than its factorization.

85018961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76830.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 85018961 is about 9220.5727045558. The cubic root of 85018961 is about 439.7156582312.

The spelling of 85018961 in words is "eighty-five million, eighteen thousand, nine hundred sixty-one".