261360004 has 6 divisors (see below), whose sum is σ = 457380014. Its totient is φ = 130680000.

The previous prime is 261359999. The next prime is 261360037. The reversal of 261360004 is 400063162.

It can be written as a sum of positive squares in only one way, i.e., 259532100 + 1827904 = 16110^2 + 1352^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32669997 + ... + 32670004.

Almost surely, 2^261360004 is an apocalyptic number.

It is an amenable number.

261360004 is a deficient number, since it is larger than the sum of its proper divisors (196020010).

261360004 is a wasteful number, since it uses less digits than its factorization.

261360004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65340005 (or 65340003 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 261360004 is about 16166.6324260806. The cubic root of 261360004 is about 639.3613453217.

The spelling of 261360004 in words is "two hundred sixty-one million, three hundred sixty thousand, four".