84691725 has 24 divisors (see below), whose sum is σ = 143285472. Its totient is φ = 44116800.

The previous prime is 84691723. The next prime is 84691787. The reversal of 84691725 is 52719648.

It is not a de Polignac number, because 84691725 - 2¹ = 84691723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84691723) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 9906 + ... + 16355.

It is an arithmetic number, because the mean of its divisors is an integer number (5970228).

Almost surely, 2^84691725 is an apocalyptic number.

It is an amenable number.

84691725 is a deficient number, since it is larger than the sum of its proper divisors (58593747).

84691725 is a wasteful number, since it uses less digits than its factorization.

84691725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26317 (or 26312 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 84691725 is about 9202.8107119510. The cubic root of 84691725 is about 439.1507811027.

The spelling of 84691725 in words is "eighty-four million, six hundred ninety-one thousand, seven hundred twenty-five".