260667819 has 6 divisors (see below), whose sum is σ = 376520196. Its totient is φ = 173778540.

The previous prime is 260667793. The next prime is 260667853. The reversal of 260667819 is 918766062.

It is not a de Polignac number, because 260667819 - 2¹⁵ = 260635051 is a prime.

It is a super-2 number, since 2×260667819² = 135895423724433522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (260667019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14481537 + ... + 14481554.

It is an arithmetic number, because the mean of its divisors is an integer number (62753366).

Almost surely, 2^260667819 is an apocalyptic number.

260667819 is a deficient number, since it is larger than the sum of its proper divisors (115852377).

260667819 is a wasteful number, since it uses less digits than its factorization.

260667819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28963097 (or 28963094 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 260667819 is about 16145.2104043273. The cubic root of 260667819 is about 638.7964187961.

The spelling of 260667819 in words is "two hundred sixty million, six hundred sixty-seven thousand, eight hundred nineteen".