78198485 has 16 divisors (see below), whose sum is σ = 95116032. Its totient is φ = 61713600.

The previous prime is 78198473. The next prime is 78198493. The reversal of 78198485 is 58489187.

It is not a de Polignac number, because 78198485 - 2⁴ = 78198469 is a prime.

It is a super-2 number, since 2×78198485² = 12230006112590450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181220 + ... + 181650.

It is an arithmetic number, because the mean of its divisors is an integer number (5944752).

Almost surely, 2^78198485 is an apocalyptic number.

It is an amenable number.

78198485 is a deficient number, since it is larger than the sum of its proper divisors (16917547).

78198485 is a wasteful number, since it uses less digits than its factorization.

78198485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844.

The product of its digits is 645120, while the sum is 50.

The square root of 78198485 is about 8842.9907271239. The cubic root of 78198485 is about 427.6279794210.

It can be divided in two parts, 78 and 198485, that multiplied together give a triangular number (15481830 = T₅₅₆₄).

The spelling of 78198485 in words is "seventy-eight million, one hundred ninety-eight thousand, four hundred eighty-five".