620822623 has 2 divisors, whose sum is σ = 620822624. Its totient is φ = 620822622.

The previous prime is 620822617. The next prime is 620822639. The reversal of 620822623 is 326228026.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620822623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620822023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310411311 + 310411312.

It is an arithmetic number, because the mean of its divisors is an integer number (310411312).

Almost surely, 2^620822623 is an apocalyptic number.

620822623 is a deficient number, since it is larger than the sum of its proper divisors (1).

620822623 is an equidigital number, since it uses as much as digits as its factorization.

620822623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 620822623 is about 24916.3123876709. The cubic root of 620822623 is about 853.0788564952.

The spelling of 620822623 in words is "six hundred twenty million, eight hundred twenty-two thousand, six hundred twenty-three".