260987806 has 4 divisors (see below), whose sum is σ = 391481712. Its totient is φ = 130493902.

The previous prime is 260987803. The next prime is 260987807. The reversal of 260987806 is 608789062.

260987806 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×260987806³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260987803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65246950 + ... + 65246953.

It is an arithmetic number, because the mean of its divisors is an integer number (97870428).

Almost surely, 2^260987806 is an apocalyptic number.

260987806 is a deficient number, since it is larger than the sum of its proper divisors (130493906).

260987806 is a wasteful number, since it uses less digits than its factorization.

260987806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130493905.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 260987806 is about 16155.1170221698. The cubic root of 260987806 is about 639.0577002061.

The spelling of 260987806 in words is "two hundred sixty million, nine hundred eighty-seven thousand, eight hundred six".