84631378 has 16 divisors (see below), whose sum is σ = 137108160. Its totient is φ = 38947536.

The previous prime is 84631369. The next prime is 84631381. The reversal of 84631378 is 87313648.

It is a self number, because there is not a number n which added to its sum of digits gives 84631378.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4801 + ... + 13867.

It is an arithmetic number, because the mean of its divisors is an integer number (8569260).

Almost surely, 2^84631378 is an apocalyptic number.

84631378 is a deficient number, since it is larger than the sum of its proper divisors (52476782).

84631378 is a wasteful number, since it uses less digits than its factorization.

84631378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441.

The product of its digits is 96768, while the sum is 40.

The square root of 84631378 is about 9199.5314011095. The cubic root of 84631378 is about 439.0464508421.

The spelling of 84631378 in words is "eighty-four million, six hundred thirty-one thousand, three hundred seventy-eight".