85149597 has 32 divisors (see below), whose sum is σ = 128217600. Its totient is φ = 49900032.

The previous prime is 85149587. The next prime is 85149619. The reversal of 85149597 is 79594158.

It is not a de Polignac number, because 85149597 - 2¹¹ = 85147549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85149527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88873 + ... + 89825.

It is an arithmetic number, because the mean of its divisors is an integer number (4006800).

Almost surely, 2^85149597 is an apocalyptic number.

85149597 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

85149597 is a deficient number, since it is larger than the sum of its proper divisors (43068003).

85149597 is a wasteful number, since it uses less digits than its factorization.

85149597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077.

The product of its digits is 453600, while the sum is 48.

The square root of 85149597 is about 9227.6539271908. The cubic root of 85149597 is about 439.9407582086.

The spelling of 85149597 in words is "eighty-five million, one hundred forty-nine thousand, five hundred ninety-seven".