85432477 has 4 divisors (see below), whose sum is σ = 92004220. Its totient is φ = 78860736.

The previous prime is 85432471. The next prime is 85432483. The reversal of 85432477 is 77423458.

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

It is an interprime number because it is at equal distance from previous prime (85432471) and next prime (85432483).

It can be written as a sum of positive squares in 2 ways, for example, as 27154521 + 58277956 = 5211^2 + 7634^2 .

It is a cyclic number.

It is not a de Polignac number, because 85432477 - 2⁷ = 85432349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85432471) 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, 3285852 + ... + 3285877.

It is an arithmetic number, because the mean of its divisors is an integer number (23001055).

Almost surely, 2^85432477 is an apocalyptic number.

It is an amenable number.

85432477 is a deficient number, since it is larger than the sum of its proper divisors (6571743).

85432477 is a wasteful number, since it uses less digits than its factorization.

85432477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571742.

The product of its digits is 188160, while the sum is 40.

The square root of 85432477 is about 9242.9690576135. The cubic root of 85432477 is about 440.4274032247.

The spelling of 85432477 in words is "eighty-five million, four hundred thirty-two thousand, four hundred seventy-seven".