260641604 has 6 divisors (see below), whose sum is σ = 456122814. Its totient is φ = 130320800.

The previous prime is 260641571. The next prime is 260641607. The reversal of 260641604 is 406146062.

It can be written as a sum of positive squares in only one way, i.e., 248377600 + 12264004 = 15760^2 + 3502^2 .

It is not an unprimeable number, because it can be changed into a prime (260641607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32580197 + ... + 32580204.

It is an arithmetic number, because the mean of its divisors is an integer number (76020469).

Almost surely, 2^260641604 is an apocalyptic number.

It is an amenable number.

260641604 is a deficient number, since it is larger than the sum of its proper divisors (195481210).

260641604 is a wasteful number, since it uses less digits than its factorization.

260641604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65160405 (or 65160403 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 260641604 is about 16144.3985332375. The cubic root of 260641604 is about 638.7750037891.

Adding to 260641604 its reverse (406146062), we get a palindrome (666787666).

The spelling of 260641604 in words is "two hundred sixty million, six hundred forty-one thousand, six hundred four".