345725761 has 2 divisors, whose sum is σ = 345725762. Its totient is φ = 345725760.

The previous prime is 345725713. The next prime is 345725777. The reversal of 345725761 is 167527543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344473600 + 1252161 = 18560^2 + 1119^2 .

It is a cyclic number.

It is not a de Polignac number, because 345725761 - 2⁹ = 345725249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345725711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172862880 + 172862881.

It is an arithmetic number, because the mean of its divisors is an integer number (172862881).

Almost surely, 2^345725761 is an apocalyptic number.

It is an amenable number.

345725761 is a deficient number, since it is larger than the sum of its proper divisors (1).

345725761 is an equidigital number, since it uses as much as digits as its factorization.

345725761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 40.

The square root of 345725761 is about 18593.7021864931. The cubic root of 345725761 is about 701.8493689302.

The spelling of 345725761 in words is "three hundred forty-five million, seven hundred twenty-five thousand, seven hundred sixty-one".