85354638 has 16 divisors (see below), whose sum is σ = 173114496. Its totient is φ = 28050680.

The previous prime is 85354609. The next prime is 85354667. The reversal of 85354638 is 83645358.

It is an interprime number because it is at equal distance from previous prime (85354609) and next prime (85354667).

It is a super-2 number, since 2×85354638² = 14570828456222088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85354638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99756 + ... + 100607.

It is an arithmetic number, because the mean of its divisors is an integer number (10819656).

Almost surely, 2^85354638 is an apocalyptic number.

85354638 is an abundant number, since it is smaller than the sum of its proper divisors (87759858).

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

85354638 is a wasteful number, since it uses less digits than its factorization.

85354638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200439.

The product of its digits is 345600, while the sum is 42.

The square root of 85354638 is about 9238.7573839776. The cubic root of 85354638 is about 440.2936022515.

The spelling of 85354638 in words is "eighty-five million, three hundred fifty-four thousand, six hundred thirty-eight".