85169619 has 12 divisors (see below), whose sum is σ = 123779656. Its totient is φ = 56430432.

The previous prime is 85169599. The next prime is 85169633. The reversal of 85169619 is 91696158.

It is not a de Polignac number, because 85169619 - 2⁸ = 85169363 is a prime.

It is a super-2 number, since 2×85169619² = 14507728001210322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85169639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27562 + ... + 30495.

Almost surely, 2^85169619 is an apocalyptic number.

85169619 is a deficient number, since it is larger than the sum of its proper divisors (38610037).

85169619 is a wasteful number, since it uses less digits than its factorization.

85169619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58226 (or 58223 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 85169619 is about 9228.7387545645. The cubic root of 85169619 is about 439.9752379315.

The spelling of 85169619 in words is "eighty-five million, one hundred sixty-nine thousand, six hundred nineteen".