85378715 has 4 divisors (see below), whose sum is σ = 102454464. Its totient is φ = 68302968.

The previous prime is 85378673. The next prime is 85378729. The reversal of 85378715 is 51787358.

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 85378715 - 2⁶ = 85378651 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8537867 + ... + 8537876.

It is an arithmetic number, because the mean of its divisors is an integer number (25613616).

Almost surely, 2^85378715 is an apocalyptic number.

85378715 is a deficient number, since it is larger than the sum of its proper divisors (17075749).

85378715 is a wasteful number, since it uses less digits than its factorization.

85378715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17075748.

The product of its digits is 235200, while the sum is 44.

The square root of 85378715 is about 9240.0603353008. The cubic root of 85378715 is about 440.3349979807.

The spelling of 85378715 in words is "eighty-five million, three hundred seventy-eight thousand, seven hundred fifteen".