85109967 has 8 divisors (see below), whose sum is σ = 126088880. Its totient is φ = 56739960.

The previous prime is 85109963. The next prime is 85109971. The reversal of 85109967 is 76990158.

It is an interprime number because it is at equal distance from previous prime (85109963) and next prime (85109971).

It is not a de Polignac number, because 85109967 - 2² = 85109963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85109963) 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, 1576084 + ... + 1576137.

It is an arithmetic number, because the mean of its divisors is an integer number (15761110).

Almost surely, 2^85109967 is an apocalyptic number.

85109967 is a deficient number, since it is larger than the sum of its proper divisors (40978913).

85109967 is a wasteful number, since it uses less digits than its factorization.

85109967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152230 (or 3152224 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 85109967 is about 9225.5063275682. The cubic root of 85109967 is about 439.8724957686.

The spelling of 85109967 in words is "eighty-five million, one hundred nine thousand, nine hundred sixty-seven".