85401078 has 16 divisors (see below), whose sum is σ = 195202560. Its totient is φ = 24400296.

The previous prime is 85401077. The next prime is 85401083. The reversal of 85401078 is 87010458.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85401077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1016638 + ... + 1016721.

It is an arithmetic number, because the mean of its divisors is an integer number (12200160).

Almost surely, 2^85401078 is an apocalyptic number.

85401078 is an abundant number, since it is smaller than the sum of its proper divisors (109801482).

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

85401078 is a wasteful number, since it uses less digits than its factorization.

85401078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033371.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 85401078 is about 9241.2703672168. The cubic root of 85401078 is about 440.3734398489.

The spelling of 85401078 in words is "eighty-five million, four hundred one thousand, seventy-eight".