345673477 has 2 divisors, whose sum is σ = 345673478. Its totient is φ = 345673476.

The previous prime is 345673457. The next prime is 345673487. The reversal of 345673477 is 774376543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338523201 + 7150276 = 18399^2 + 2674^2 .

It is an emirp because it is prime and its reverse (774376543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345673477 - 2²³ = 337284869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345673457) 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, 172836738 + 172836739.

It is an arithmetic number, because the mean of its divisors is an integer number (172836739).

Almost surely, 2^345673477 is an apocalyptic number.

It is an amenable number.

345673477 is a deficient number, since it is larger than the sum of its proper divisors (1).

345673477 is an equidigital number, since it uses as much as digits as its factorization.

345673477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 46.

The square root of 345673477 is about 18592.2961734155. The cubic root of 345673477 is about 701.8139869922.

The spelling of 345673477 in words is "three hundred forty-five million, six hundred seventy-three thousand, four hundred seventy-seven".