620463191 has 2 divisors, whose sum is σ = 620463192. Its totient is φ = 620463190.

The previous prime is 620463187. The next prime is 620463197. The reversal of 620463191 is 191364026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620463191 - 2² = 620463187 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620463197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310231595 + 310231596.

It is an arithmetic number, because the mean of its divisors is an integer number (310231596).

Almost surely, 2^620463191 is an apocalyptic number.

620463191 is a deficient number, since it is larger than the sum of its proper divisors (1).

620463191 is an equidigital number, since it uses as much as digits as its factorization.

620463191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 620463191 is about 24909.0985585589. The cubic root of 620463191 is about 852.9141916233.

The spelling of 620463191 in words is "six hundred twenty million, four hundred sixty-three thousand, one hundred ninety-one".