85643914 has 8 divisors (see below), whose sum is σ = 128549988. Its totient is φ = 42793920.

The previous prime is 85643911. The next prime is 85643923. The reversal of 85643914 is 41934658.

It can be written as a sum of positive squares in 2 ways, for example, as 85470025 + 173889 = 9245^2 + 417^2 .

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 (85643911) 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, 9967 + ... + 16450.

Almost surely, 2^85643914 is an apocalyptic number.

85643914 is a deficient number, since it is larger than the sum of its proper divisors (42906074).

85643914 is a wasteful number, since it uses less digits than its factorization.

85643914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28040.

The product of its digits is 103680, while the sum is 40.

The square root of 85643914 is about 9254.3997104080. The cubic root of 85643914 is about 440.7904421003.

The spelling of 85643914 in words is "eighty-five million, six hundred forty-three thousand, nine hundred fourteen".