85477427 has 4 divisors (see below), whose sum is σ = 97688496. Its totient is φ = 73266360.

The previous prime is 85477423. The next prime is 85477433. The reversal of 85477427 is 72477458.

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

It is a cyclic number.

It is not a de Polignac number, because 85477427 - 2² = 85477423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85477423) 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, 6105524 + ... + 6105537.

It is an arithmetic number, because the mean of its divisors is an integer number (24422124).

Almost surely, 2^85477427 is an apocalyptic number.

85477427 is a deficient number, since it is larger than the sum of its proper divisors (12211069).

85477427 is a wasteful number, since it uses less digits than its factorization.

85477427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12211068.

The product of its digits is 439040, while the sum is 44.

The square root of 85477427 is about 9245.4003158327. The cubic root of 85477427 is about 440.5046327959.

The spelling of 85477427 in words is "eighty-five million, four hundred seventy-seven thousand, four hundred twenty-seven".