712890641 has 2 divisors, whose sum is σ = 712890642. Its totient is φ = 712890640.

The previous prime is 712890617. The next prime is 712890677. The reversal of 712890641 is 146098217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 453519616 + 259371025 = 21296^2 + 16105^2 .

It is a cyclic number.

It is not a de Polignac number, because 712890641 - 2²⁶ = 645781777 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 712890595 and 712890604.

It is not a weakly prime, because it can be changed into another prime (712890611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356445320 + 356445321.

It is an arithmetic number, because the mean of its divisors is an integer number (356445321).

Almost surely, 2^712890641 is an apocalyptic number.

It is an amenable number.

712890641 is a deficient number, since it is larger than the sum of its proper divisors (1).

712890641 is an equidigital number, since it uses as much as digits as its factorization.

712890641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 712890641 is about 26700.0120037426. The cubic root of 712890641 is about 893.3211940351.

The spelling of 712890641 in words is "seven hundred twelve million, eight hundred ninety thousand, six hundred forty-one".