621110473 has 2 divisors, whose sum is σ = 621110474. Its totient is φ = 621110472.

The previous prime is 621110383. The next prime is 621110537. The reversal of 621110473 is 374011126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406546569 + 214563904 = 20163^2 + 14648^2 .

It is a cyclic number.

It is not a de Polignac number, because 621110473 - 2²¹ = 619013321 is a prime.

It is not a weakly prime, because it can be changed into another prime (621110573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310555236 + 310555237.

It is an arithmetic number, because the mean of its divisors is an integer number (310555237).

Almost surely, 2^621110473 is an apocalyptic number.

It is an amenable number.

621110473 is a deficient number, since it is larger than the sum of its proper divisors (1).

621110473 is an equidigital number, since it uses as much as digits as its factorization.

621110473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 621110473 is about 24922.0880545752. The cubic root of 621110473 is about 853.2106820213.

Adding to 621110473 its reverse (374011126), we get a palindrome (995121599).

The spelling of 621110473 in words is "six hundred twenty-one million, one hundred ten thousand, four hundred seventy-three".