85378698 has 40 divisors (see below), whose sum is σ = 191981988. Its totient is φ = 28359936.

The previous prime is 85378673. The next prime is 85378729. The reversal of 85378698 is 89687358.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83119689 + 2259009 = 9117^2 + 1503^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56440 + ... + 57932.

Almost surely, 2^85378698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85378698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95990994).

85378698 is an abundant number, since it is smaller than the sum of its proper divisors (106603290).

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

85378698 is a wasteful number, since it uses less digits than its factorization.

85378698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 1851 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 85378698 is about 9240.0594153934. The cubic root of 85378698 is about 440.3349687552.

The spelling of 85378698 in words is "eighty-five million, three hundred seventy-eight thousand, six hundred ninety-eight".