70523 has 4 divisors (see below), whose sum is σ = 71280. Its totient is φ = 69768.

The previous prime is 70507. The next prime is 70529. The reversal of 70523 is 32507.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 70523 - 2⁴ = 70507 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (70529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215 + ... + 432.

It is an arithmetic number, because the mean of its divisors is an integer number (17820).

2⁷⁰⁵²³ is an apocalyptic number.

70523 is a deficient number, since it is larger than the sum of its proper divisors (757).

70523 is a wasteful number, since it uses less digits than its factorization.

70523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 70523 is about 265.5616689208. The cubic root of 70523 is about 41.3152380614.

The spelling of 70523 in words is "seventy thousand, five hundred twenty-three".