345287077 has 2 divisors, whose sum is σ = 345287078. Its totient is φ = 345287076.

The previous prime is 345287069. The next prime is 345287081. The reversal of 345287077 is 770782543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262731681 + 82555396 = 16209^2 + 9086^2 .

It is a cyclic number.

It is not a de Polignac number, because 345287077 - 2³ = 345287069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345287777) 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, 172643538 + 172643539.

It is an arithmetic number, because the mean of its divisors is an integer number (172643539).

Almost surely, 2^345287077 is an apocalyptic number.

It is an amenable number.

345287077 is a deficient number, since it is larger than the sum of its proper divisors (1).

345287077 is an equidigital number, since it uses as much as digits as its factorization.

345287077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 43.

The square root of 345287077 is about 18581.9018671394. The cubic root of 345287077 is about 701.5523894162.

The spelling of 345287077 in words is "three hundred forty-five million, two hundred eighty-seven thousand, seventy-seven".