423697 has 2 divisors, whose sum is σ = 423698. Its totient is φ = 423696.

The previous prime is 423667. The next prime is 423707. The reversal of 423697 is 796324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408321 + 15376 = 639^2 + 124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423697 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (423617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211848 + 211849.

It is an arithmetic number, because the mean of its divisors is an integer number (211849).

2⁴²³⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

423697 is a deficient number, since it is larger than the sum of its proper divisors (1).

423697 is an equidigital number, since it uses as much as digits as its factorization.

423697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 423697 is about 650.9201179868. The cubic root of 423697 is about 75.1078153076.

The spelling of 423697 in words is "four hundred twenty-three thousand, six hundred ninety-seven".