84779075 has 6 divisors (see below), whose sum is σ = 105126084. Its totient is φ = 67823240.

The previous prime is 84779069. The next prime is 84779077. The reversal of 84779075 is 57097748.

It is not a de Polignac number, because 84779075 - 2⁶ = 84779011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84779077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1695557 + ... + 1695606.

It is an arithmetic number, because the mean of its divisors is an integer number (17521014).

Almost surely, 2^84779075 is an apocalyptic number.

84779075 is a deficient number, since it is larger than the sum of its proper divisors (20347009).

84779075 is a wasteful number, since it uses less digits than its factorization.

84779075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391173 (or 3391168 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 84779075 is about 9207.5553215824. Note that the first 3 decimals coincide. The cubic root of 84779075 is about 439.3017074587.

The spelling of 84779075 in words is "eighty-four million, seven hundred seventy-nine thousand, seventy-five".