85464816 has 20 divisors (see below), whose sum is σ = 220784232. Its totient is φ = 28488256.

The previous prime is 85464811. The next prime is 85464817. The reversal of 85464816 is 61846458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85464811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890211 + ... + 890306.

Almost surely, 2^85464816 is an apocalyptic number.

It is an amenable number.

85464816 is an abundant number, since it is smaller than the sum of its proper divisors (135319416).

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

85464816 is a wasteful number, since it uses less digits than its factorization.

85464816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780528 (or 1780522 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 85464816 is about 9244.7182758589. The cubic root of 85464816 is about 440.4829682960.

The spelling of 85464816 in words is "eighty-five million, four hundred sixty-four thousand, eight hundred sixteen".