85687373 has 4 divisors (see below), whose sum is σ = 88642140. Its totient is φ = 82732608.

The previous prime is 85687339. The next prime is 85687403. The reversal of 85687373 is 37378658.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31561924 + 54125449 = 5618^2 + 7357^2 .

It is a cyclic number.

It is not a de Polignac number, because 85687373 - 2¹⁸ = 85425229 is a prime.

It is a super-2 number, since 2×85687373² = 14684651783282258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85687333) 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, 1477340 + ... + 1477397.

It is an arithmetic number, because the mean of its divisors is an integer number (22160535).

Almost surely, 2^85687373 is an apocalyptic number.

It is an amenable number.

85687373 is a deficient number, since it is larger than the sum of its proper divisors (2954767).

85687373 is a wasteful number, since it uses less digits than its factorization.

85687373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954766.

The product of its digits is 846720, while the sum is 47.

The square root of 85687373 is about 9256.7474309284. The cubic root of 85687373 is about 440.8649874732.

The spelling of 85687373 in words is "eighty-five million, six hundred eighty-seven thousand, three hundred seventy-three".