84724529 has 8 divisors (see below), whose sum is σ = 86265000. Its totient is φ = 83197312.

The previous prime is 84724511. The next prime is 84724537. The reversal of 84724529 is 92542748.

It can be written as a sum of positive squares in 4 ways, for example, as 10368400 + 74356129 = 3220^2 + 8623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84724529 - 2²⁰ = 83675953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84724429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10067 + ... + 16455.

It is an arithmetic number, because the mean of its divisors is an integer number (10783125).

Almost surely, 2^84724529 is an apocalyptic number.

84724529 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

84724529 is a deficient number, since it is larger than the sum of its proper divisors (1540471).

84724529 is a wasteful number, since it uses less digits than its factorization.

84724529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627.

The product of its digits is 161280, while the sum is 41.

The square root of 84724529 is about 9204.5928209780. The cubic root of 84724529 is about 439.2074731532.

The spelling of 84724529 in words is "eighty-four million, seven hundred twenty-four thousand, five hundred twenty-nine".