345563737 has 2 divisors, whose sum is σ = 345563738. Its totient is φ = 345563736.

The previous prime is 345563717. The next prime is 345563759. The reversal of 345563737 is 737365543.

345563737 is nontrivially palindromic in base 7.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253096281 + 92467456 = 15909^2 + 9616^2 .

It is a cyclic number.

It is not a de Polignac number, because 345563737 - 2²³ = 337175129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345563693 and 345563702.

It is not a weakly prime, because it can be changed into another prime (345563717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172781868 + 172781869.

It is an arithmetic number, because the mean of its divisors is an integer number (172781869).

Almost surely, 2^345563737 is an apocalyptic number.

It is an amenable number.

345563737 is a deficient number, since it is larger than the sum of its proper divisors (1).

345563737 is an equidigital number, since it uses as much as digits as its factorization.

345563737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 43.

The square root of 345563737 is about 18589.3447167995. The cubic root of 345563737 is about 701.7397114850.

The spelling of 345563737 in words is "three hundred forty-five million, five hundred sixty-three thousand, seven hundred thirty-seven".