260117779 has 4 divisors (see below), whose sum is σ = 260150184. Its totient is φ = 260085376.

The previous prime is 260117747. The next prime is 260117821. The reversal of 260117779 is 977711062.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 260117779 - 2⁵ = 260117747 is a prime.

It is a super-2 number, since 2×260117779² = 135322517903785682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260117729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5784 + ... + 23530.

It is an arithmetic number, because the mean of its divisors is an integer number (65037546).

Almost surely, 2^260117779 is an apocalyptic number.

260117779 is a deficient number, since it is larger than the sum of its proper divisors (32405).

260117779 is a wasteful number, since it uses less digits than its factorization.

260117779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32404.

The product of its (nonzero) digits is 37044, while the sum is 40.

The square root of 260117779 is about 16128.1672548371. The cubic root of 260117779 is about 638.3467903338.

The spelling of 260117779 in words is "two hundred sixty million, one hundred seventeen thousand, seven hundred seventy-nine".