85668434 has 8 divisors (see below), whose sum is σ = 131636988. Its totient is φ = 41789440.

The previous prime is 85668421. The next prime is 85668439. The reversal of 85668434 is 43486658.

It can be written as a sum of positive squares in 2 ways, for example, as 57078025 + 28590409 = 7555^2 + 5347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85668439) 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, 522287 + ... + 522450.

Almost surely, 2^85668434 is an apocalyptic number.

85668434 is a deficient number, since it is larger than the sum of its proper divisors (45968554).

85668434 is a wasteful number, since it uses less digits than its factorization.

85668434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044780.

The product of its digits is 552960, while the sum is 44.

The square root of 85668434 is about 9255.7243908837. The cubic root of 85668434 is about 440.8325044404.

The spelling of 85668434 in words is "eighty-five million, six hundred sixty-eight thousand, four hundred thirty-four".