85837638 has 16 divisors (see below), whose sum is σ = 171892800. Its totient is φ = 28576296.

The previous prime is 85837637. The next prime is 85837639. The reversal of 85837638 is 83673858.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (85837637) and next prime (85837639).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85837637) 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, 3688 + ... + 13611.

It is an arithmetic number, because the mean of its divisors is an integer number (10743300).

Almost surely, 2^85837638 is an apocalyptic number.

85837638 is an abundant number, since it is smaller than the sum of its proper divisors (86055162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85837638 is a wasteful number, since it uses less digits than its factorization.

85837638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18131.

The product of its digits is 967680, while the sum is 48.

The square root of 85837638 is about 9264.8603875072. The cubic root of 85837638 is about 441.1225434718.

The spelling of 85837638 in words is "eighty-five million, eight hundred thirty-seven thousand, six hundred thirty-eight".