85006378 has 4 divisors (see below), whose sum is σ = 127509570. Its totient is φ = 42503188.

The previous prime is 85006373. The next prime is 85006391. The reversal of 85006378 is 87360058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87360058 = 2 ⋅43680029.

It can be written as a sum of positive squares in only one way, i.e., 77316849 + 7689529 = 8793^2 + 2773^2 .

It is not an unprimeable number, because it can be changed into a prime (85006373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21251593 + ... + 21251596.

Almost surely, 2^85006378 is an apocalyptic number.

85006378 is a deficient number, since it is larger than the sum of its proper divisors (42503192).

85006378 is a wasteful number, since it uses less digits than its factorization.

85006378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42503191.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 85006378 is about 9219.8903464195. The cubic root of 85006378 is about 439.6939641877.

It can be divided in two parts, 8500 and 6378, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 85006378 in words is "eighty-five million, six thousand, three hundred seventy-eight".