84783975 has 24 divisors (see below), whose sum is σ = 140444880. Its totient is φ = 45131520.

The previous prime is 84783971. The next prime is 84783989. The reversal of 84783975 is 57938748.

It is not a de Polignac number, because 84783975 - 2² = 84783971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84783971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65131 + ... + 66419.

It is an arithmetic number, because the mean of its divisors is an integer number (5851870).

Almost surely, 2^84783975 is an apocalyptic number.

84783975 is a deficient number, since it is larger than the sum of its proper divisors (55660905).

84783975 is a wasteful number, since it uses less digits than its factorization.

84783975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179 (or 2174 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 84783975 is about 9207.8214035677. The cubic root of 84783975 is about 439.3101707771.

It can be divided in two parts, 84783 and 975, that added together give a palindrome (85758).

The spelling of 84783975 in words is "eighty-four million, seven hundred eighty-three thousand, nine hundred seventy-five".