85067784 has 48 divisors (see below), whose sum is σ = 236019420. Its totient is φ = 27663360.

The previous prime is 85067783. The next prime is 85067839. The reversal of 85067784 is 48776058.

It can be written as a sum of positive squares in 2 ways, for example, as 85045284 + 22500 = 9222^2 + 150^2 .

It is not an unprimeable number, because it can be changed into a prime (85067783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11457 + ... + 17360.

Almost surely, 2^85067784 is an apocalyptic number.

It is an amenable number.

85067784 is an abundant number, since it is smaller than the sum of its proper divisors (150951636).

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

85067784 is a wasteful number, since it uses less digits than its factorization.

85067784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28870 (or 28863 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 85067784 is about 9223.2198282379. The cubic root of 85067784 is about 439.7998125155.

It can be divided in two parts, 8506 and 7784, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 85067784 in words is "eighty-five million, sixty-seven thousand, seven hundred eighty-four".