354645623 has 2 divisors, whose sum is σ = 354645624. Its totient is φ = 354645622.

The previous prime is 354645617. The next prime is 354645667. The reversal of 354645623 is 326546453.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 354645623 - 2¹⁴ = 354629239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354645223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177322811 + 177322812.

It is an arithmetic number, because the mean of its divisors is an integer number (177322812).

Almost surely, 2^354645623 is an apocalyptic number.

354645623 is a deficient number, since it is larger than the sum of its proper divisors (1).

354645623 is an equidigital number, since it uses as much as digits as its factorization.

354645623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 38.

The square root of 354645623 is about 18832.0371441860. The cubic root of 354645623 is about 707.8341875790.

The spelling of 354645623 in words is "three hundred fifty-four million, six hundred forty-five thousand, six hundred twenty-three".