78485371 has 6 divisors (see below), whose sum is σ = 82833972. Its totient is φ = 74354220.

The previous prime is 78485369. The next prime is 78485387. The reversal of 78485371 is 17358487.

It is not a de Polignac number, because 78485371 - 2¹ = 78485369 is a prime.

It is a super-2 number, since 2×78485371² = 12319906922015282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78485171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108345 + ... + 109066.

It is an arithmetic number, because the mean of its divisors is an integer number (13805662).

Almost surely, 2^78485371 is an apocalyptic number.

78485371 is a deficient number, since it is larger than the sum of its proper divisors (4348601).

78485371 is a wasteful number, since it uses less digits than its factorization.

78485371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217449 (or 217430 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The square root of 78485371 is about 8859.1969726381. The cubic root of 78485371 is about 428.1502860445.

The spelling of 78485371 in words is "seventy-eight million, four hundred eighty-five thousand, three hundred seventy-one".