813970 has 16 divisors (see below), whose sum is σ = 1529280. Its totient is φ = 311344.

The previous prime is 813961. The next prime is 813971. The reversal of 813970 is 79318.

813970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (813971) by changing a digit.

813970 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540 + ... + 1999.

It is an arithmetic number, because the mean of its divisors is an integer number (95580).

2⁸¹³⁹⁷⁰ is an apocalyptic number.

813970 is a deficient number, since it is larger than the sum of its proper divisors (715310).

813970 is a wasteful number, since it uses less digits than its factorization.

813970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 813970 is about 902.2028596718. The cubic root of 813970 is about 93.3690198001.

The spelling of 813970 in words is "eight hundred thirteen thousand, nine hundred seventy".