345551693 has 2 divisors, whose sum is σ = 345551694. Its totient is φ = 345551692.

The previous prime is 345551671. The next prime is 345551729. The reversal of 345551693 is 396155543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261242569 + 84309124 = 16163^2 + 9182^2 .

It is a cyclic number.

It is not a de Polignac number, because 345551693 - 2¹² = 345547597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345551693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345551623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172775846 + 172775847.

It is an arithmetic number, because the mean of its divisors is an integer number (172775847).

Almost surely, 2^345551693 is an apocalyptic number.

It is an amenable number.

345551693 is a deficient number, since it is larger than the sum of its proper divisors (1).

345551693 is an equidigital number, since it uses as much as digits as its factorization.

345551693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 41.

The square root of 345551693 is about 18589.0207649569. The cubic root of 345551693 is about 701.7315587668.

The spelling of 345551693 in words is "three hundred forty-five million, five hundred fifty-one thousand, six hundred ninety-three".