260017631 has 2 divisors, whose sum is σ = 260017632. Its totient is φ = 260017630.

The previous prime is 260017619. The next prime is 260017649. The reversal of 260017631 is 136710062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260017631 - 2¹⁰ = 260016607 is a prime.

It is a super-2 number, since 2×260017631² = 135218336861704322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 260017631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260017651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130008815 + 130008816.

It is an arithmetic number, because the mean of its divisors is an integer number (130008816).

Almost surely, 2^260017631 is an apocalyptic number.

260017631 is a deficient number, since it is larger than the sum of its proper divisors (1).

260017631 is an equidigital number, since it uses as much as digits as its factorization.

260017631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 260017631 is about 16125.0622014304. The cubic root of 260017631 is about 638.2648564744.

Adding to 260017631 its reverse (136710062), we get a palindrome (396727693).

The spelling of 260017631 in words is "two hundred sixty million, seventeen thousand, six hundred thirty-one".