621110047 has 2 divisors, whose sum is σ = 621110048. Its totient is φ = 621110046.

The previous prime is 621109987. The next prime is 621110089. The reversal of 621110047 is 740011126.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621110047 - 2¹¹ = 621107999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621110647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310555023 + 310555024.

It is an arithmetic number, because the mean of its divisors is an integer number (310555024).

Almost surely, 2^621110047 is an apocalyptic number.

621110047 is a deficient number, since it is larger than the sum of its proper divisors (1).

621110047 is an equidigital number, since it uses as much as digits as its factorization.

621110047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 621110047 is about 24922.0795079383. The cubic root of 621110047 is about 853.2104869579.

The spelling of 621110047 in words is "six hundred twenty-one million, one hundred ten thousand, forty-seven".