345402005 has 16 divisors (see below), whose sum is σ = 472623984. Its totient is φ = 240061440.

The previous prime is 345401981. The next prime is 345402023. The reversal of 345402005 is 500204543.

It can be written as a sum of positive squares in 8 ways, for example, as 22193521 + 323208484 = 4711^2 + 17978^2 .

It is not a de Polignac number, because 345402005 - 2⁶ = 345401941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155186 + ... + 157395.

It is an arithmetic number, because the mean of its divisors is an integer number (29538999).

Almost surely, 2^345402005 is an apocalyptic number.

It is an amenable number.

345402005 is a deficient number, since it is larger than the sum of its proper divisors (127221979).

345402005 is a wasteful number, since it uses less digits than its factorization.

345402005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312616.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 345402005 is about 18584.9940812474. The cubic root of 345402005 is about 701.6302174752.

Adding to 345402005 its reverse (500204543), we get a palindrome (845606548).

The spelling of 345402005 in words is "three hundred forty-five million, four hundred two thousand, five".