70745 has 4 divisors (see below), whose sum is σ = 84900. Its totient is φ = 56592.

The previous prime is 70729. The next prime is 70753. The reversal of 70745 is 54707.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54707 = 227 ⋅241.

It can be written as a sum of positive squares in 2 ways, for example, as 48841 + 21904 = 221^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 70745 - 2⁴ = 70729 is a prime.

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

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 70745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7070 + ... + 7079.

It is an arithmetic number, because the mean of its divisors is an integer number (21225).

2⁷⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

70745 is a deficient number, since it is larger than the sum of its proper divisors (14155).

70745 is a wasteful number, since it uses less digits than its factorization.

70745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14154.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 70745 is about 265.9793225046. The cubic root of 70745 is about 41.3585448571.

The spelling of 70745 in words is "seventy thousand, seven hundred forty-five".