712145689 has 2 divisors, whose sum is σ = 712145690. Its totient is φ = 712145688.

The previous prime is 712145641. The next prime is 712145699. The reversal of 712145689 is 986541217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 629608464 + 82537225 = 25092^2 + 9085^2 .

It is a cyclic number.

It is not a de Polignac number, because 712145689 - 2²⁵ = 678591257 is a prime.

It is a super-2 number, since 2×712145689² = 1014302964722569442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (712145639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356072844 + 356072845.

It is an arithmetic number, because the mean of its divisors is an integer number (356072845).

Almost surely, 2^712145689 is an apocalyptic number.

It is an amenable number.

712145689 is a deficient number, since it is larger than the sum of its proper divisors (1).

712145689 is an equidigital number, since it uses as much as digits as its factorization.

712145689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 712145689 is about 26686.0579516721. The cubic root of 712145689 is about 893.0099198554.

The spelling of 712145689 in words is "seven hundred twelve million, one hundred forty-five thousand, six hundred eighty-nine".