84720523 has 8 divisors (see below), whose sum is σ = 88646400. Its totient is φ = 80814888.

The previous prime is 84720499. The next prime is 84720527. The reversal of 84720523 is 32502748.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84720523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84720527) 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, 3858 + ... + 13576.

It is an arithmetic number, because the mean of its divisors is an integer number (11080800).

Almost surely, 2^84720523 is an apocalyptic number.

84720523 is a deficient number, since it is larger than the sum of its proper divisors (3925877).

84720523 is a wasteful number, since it uses less digits than its factorization.

84720523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10121.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 84720523 is about 9204.3752096489. The cubic root of 84720523 is about 439.2005507468.

The spelling of 84720523 in words is "eighty-four million, seven hundred twenty thousand, five hundred twenty-three".