385723697 has 2 divisors, whose sum is σ = 385723698. Its totient is φ = 385723696.

The previous prime is 385723649. The next prime is 385723711. The reversal of 385723697 is 796327583.

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., 378535936 + 7187761 = 19456^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 385723697 - 2⁸ = 385723441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385723397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192861848 + 192861849.

It is an arithmetic number, because the mean of its divisors is an integer number (192861849).

Almost surely, 2^385723697 is an apocalyptic number.

It is an amenable number.

385723697 is a deficient number, since it is larger than the sum of its proper divisors (1).

385723697 is an equidigital number, since it uses as much as digits as its factorization.

385723697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 50.

The square root of 385723697 is about 19639.8497193843. The cubic root of 385723697 is about 727.9341713059.

The spelling of 385723697 in words is "three hundred eighty-five million, seven hundred twenty-three thousand, six hundred ninety-seven".