6450165623 has 4 divisors (see below), whose sum is σ = 7036544328. Its totient is φ = 5863786920.

The previous prime is 6450165583. The next prime is 6450165671. The reversal of 6450165623 is 3265610546.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6450165623 - 2¹⁶ = 6450100087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6450135623) 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 in 3 ways as a sum of consecutive naturals, for example, 293189336 + ... + 293189357.

It is an arithmetic number, because the mean of its divisors is an integer number (1759136082).

Almost surely, 2^6450165623 is an apocalyptic number.

6450165623 is a deficient number, since it is larger than the sum of its proper divisors (586378705).

6450165623 is a wasteful number, since it uses less digits than its factorization.

6450165623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586378704.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 6450165623 is about 80312.9231381849. The cubic root of 6450165623 is about 1861.4739177572.

The spelling of 6450165623 in words is "six billion, four hundred fifty million, one hundred sixty-five thousand, six hundred twenty-three".