1716463421 has 2 divisors, whose sum is σ = 1716463422. Its totient is φ = 1716463420.

The previous prime is 1716463417. The next prime is 1716463433. The reversal of 1716463421 is 1243646171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1119638521 + 596824900 = 33461^2 + 24430^2 .

It is a cyclic number.

It is not a de Polignac number, because 1716463421 - 2² = 1716463417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1716463471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858231710 + 858231711.

It is an arithmetic number, because the mean of its divisors is an integer number (858231711).

Almost surely, 2^1716463421 is an apocalyptic number.

It is an amenable number.

1716463421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1716463421 is an equidigital number, since it uses as much as digits as its factorization.

1716463421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 1716463421 is about 41430.2235209997. The cubic root of 1716463421 is about 1197.3235304657.

The spelling of 1716463421 in words is "one billion, seven hundred sixteen million, four hundred sixty-three thousand, four hundred twenty-one".