70457 has 2 divisors, whose sum is σ = 70458.
Its totient is φ = 70456.
The previous prime is 70451. The next prime is 70459. The reversal of 70457 is 75407.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 38416 + 32041 = 196^2 + 179^2
It is an emirp because it is prime and its reverse (75407) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 70457 - 26 = 70393 is a prime.
Together with 70459, it forms a pair of twin primes.
It is a Chen prime.
It is a plaindrome in base 16.
It is not a weakly prime, because it can be changed into another prime (70451) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35228 + 35229.
It is an arithmetic number, because the mean of its divisors is an integer number (35229).
270457 is an apocalyptic number.
It is an amenable number.
70457 is a deficient number, since it is larger than the sum of its proper divisors (1).
70457 is an equidigital number, since it uses as much as digits as its factorization.
70457 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 980, while the sum is 23.
The square root of 70457 is about 265.4373749117.
The cubic root of 70457 is about 41.3023455451.
Subtracting 70457 from its reverse (75407), we obtain a triangular number (4950 = T99).
The spelling of 70457 in words is "seventy thousand, four hundred fifty-seven".