620354623 has 4 divisors (see below), whose sum is σ = 708976720. Its totient is φ = 531732528.

The previous prime is 620354621. The next prime is 620354639. The reversal of 620354623 is 326453026.

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 620354623 - 2¹ = 620354621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620354621) 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, 44311038 + ... + 44311051.

It is an arithmetic number, because the mean of its divisors is an integer number (177244180).

Almost surely, 2^620354623 is an apocalyptic number.

620354623 is a deficient number, since it is larger than the sum of its proper divisors (88622097).

620354623 is an equidigital number, since it uses as much as digits as its factorization.

620354623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88622096.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 620354623 is about 24906.9191792160. The cubic root of 620354623 is about 852.8644413771.

The spelling of 620354623 in words is "six hundred twenty million, three hundred fifty-four thousand, six hundred twenty-three".