70823 has 2 divisors, whose sum is σ = 70824. Its totient is φ = 70822.

The previous prime is 70793. The next prime is 70841. The reversal of 70823 is 32807.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70795 and 70804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70843) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35411 + 35412.

It is an arithmetic number, because the mean of its divisors is an integer number (35412).

2⁷⁰⁸²³ is an apocalyptic number.

70823 is a deficient number, since it is larger than the sum of its proper divisors (1).

70823 is an equidigital number, since it uses as much as digits as its factorization.

70823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 70823 is about 266.1259100501. The cubic root of 70823 is about 41.3737392484.

The spelling of 70823 in words is "seventy thousand, eight hundred twenty-three".