261482686 has 4 divisors (see below), whose sum is σ = 392224032. Its totient is φ = 130741342.

The previous prime is 261482671. The next prime is 261482687. The reversal of 261482686 is 686284162.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261482687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65370670 + ... + 65370673.

It is an arithmetic number, because the mean of its divisors is an integer number (98056008).

Almost surely, 2^261482686 is an apocalyptic number.

261482686 is a deficient number, since it is larger than the sum of its proper divisors (130741346).

261482686 is a wasteful number, since it uses less digits than its factorization.

261482686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130741345.

The product of its digits is 221184, while the sum is 43.

The square root of 261482686 is about 16170.4262776217. The cubic root of 261482686 is about 639.4613680970.

The spelling of 261482686 in words is "two hundred sixty-one million, four hundred eighty-two thousand, six hundred eighty-six".