345502639 has 2 divisors, whose sum is σ = 345502640. Its totient is φ = 345502638.

The previous prime is 345502627. The next prime is 345502673. The reversal of 345502639 is 936205543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345502639 - 2¹¹ = 345500591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345502598 and 345502607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345502609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172751319 + 172751320.

It is an arithmetic number, because the mean of its divisors is an integer number (172751320).

Almost surely, 2^345502639 is an apocalyptic number.

345502639 is a deficient number, since it is larger than the sum of its proper divisors (1).

345502639 is an equidigital number, since it uses as much as digits as its factorization.

345502639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 345502639 is about 18587.7012833755. The cubic root of 345502639 is about 701.6983516089.

The spelling of 345502639 in words is "three hundred forty-five million, five hundred two thousand, six hundred thirty-nine".