616331543 has 2 divisors, whose sum is σ = 616331544. Its totient is φ = 616331542.

The previous prime is 616331537. The next prime is 616331567. The reversal of 616331543 is 345133616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616331543 - 2²⁶ = 549222679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616331843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308165771 + 308165772.

It is an arithmetic number, because the mean of its divisors is an integer number (308165772).

Almost surely, 2^616331543 is an apocalyptic number.

616331543 is a deficient number, since it is larger than the sum of its proper divisors (1).

616331543 is an equidigital number, since it uses as much as digits as its factorization.

616331543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 32.

The square root of 616331543 is about 24826.0255175894. The cubic root of 616331543 is about 851.0167961104.

The spelling of 616331543 in words is "six hundred sixteen million, three hundred thirty-one thousand, five hundred forty-three".