531676729 has 2 divisors, whose sum is σ = 531676730. Its totient is φ = 531676728.

The previous prime is 531676711. The next prime is 531676757. The reversal of 531676729 is 927676135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468506025 + 63170704 = 21645^2 + 7948^2 .

It is a cyclic number.

It is not a de Polignac number, because 531676729 - 2⁵ = 531676697 is a prime.

It is not a weakly prime, because it can be changed into another prime (531676759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265838364 + 265838365.

It is an arithmetic number, because the mean of its divisors is an integer number (265838365).

Almost surely, 2^531676729 is an apocalyptic number.

It is an amenable number.

531676729 is a deficient number, since it is larger than the sum of its proper divisors (1).

531676729 is an equidigital number, since it uses as much as digits as its factorization.

531676729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 46.

The square root of 531676729 is about 23058.1163367696. The cubic root of 531676729 is about 810.1197450362.

The spelling of 531676729 in words is "five hundred thirty-one million, six hundred seventy-six thousand, seven hundred twenty-nine".