260406111 has 32 divisors (see below), whose sum is σ = 413206528. Its totient is φ = 142767360.

The previous prime is 260406101. The next prime is 260406121. The reversal of 260406111 is 111604062.

It is an interprime number because it is at equal distance from previous prime (260406101) and next prime (260406121).

It is a de Polignac number, because none of the positive numbers 2^k-260406111 is a prime.

It is a super-2 number, since 2×260406111² = 135622685292288642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260406101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54426 + ... + 59016.

It is an arithmetic number, because the mean of its divisors is an integer number (12912704).

Almost surely, 2^260406111 is an apocalyptic number.

260406111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

260406111 is a deficient number, since it is larger than the sum of its proper divisors (152800417).

260406111 is a wasteful number, since it uses less digits than its factorization.

260406111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 260406111 is about 16137.1035505136. The cubic root of 260406111 is about 638.5825653773.

The spelling of 260406111 in words is "two hundred sixty million, four hundred six thousand, one hundred eleven".