84078712 has 8 divisors (see below), whose sum is σ = 157647600. Its totient is φ = 42039352.

The previous prime is 84078703. The next prime is 84078721. The reversal of 84078712 is 21787048.

It is an interprime number because it is at equal distance from previous prime (84078703) and next prime (84078721).

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5254912 + ... + 5254927.

It is an arithmetic number, because the mean of its divisors is an integer number (19705950).

Almost surely, 2^84078712 is an apocalyptic number.

It is an amenable number.

84078712 is a deficient number, since it is larger than the sum of its proper divisors (73568888).

84078712 is a wasteful number, since it uses less digits than its factorization.

84078712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10509845 (or 10509841 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 84078712 is about 9169.4444760847. Note that the first 4 decimals coincide. The cubic root of 84078712 is about 438.0886652163.

The spelling of 84078712 in words is "eighty-four million, seventy-eight thousand, seven hundred twelve".