70073 has 4 divisors (see below), whose sum is σ = 71040. Its totient is φ = 69108.

The previous prime is 70067. The next prime is 70079. The reversal of 70073 is 37007.

70073 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37007 = 23 ⋅1609.

It is an interprime number because it is at equal distance from previous prime (70067) and next prime (70079).

It is a cyclic number.

It is not a de Polignac number, because 70073 - 2⁶ = 70009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70079) 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, 365 + ... + 522.

It is an arithmetic number, because the mean of its divisors is an integer number (17760).

2⁷⁰⁰⁷³ is an apocalyptic number.

It is an amenable number.

70073 is a deficient number, since it is larger than the sum of its proper divisors (967).

70073 is an equidigital number, since it uses as much as digits as its factorization.

70073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966.

The product of its (nonzero) digits is 147, while the sum is 17.

The square root of 70073 is about 264.7130521905. The cubic root of 70073 is about 41.2271743936.

The spelling of 70073 in words is "seventy thousand, seventy-three", and thus it is an iban number.