261486606 has 8 divisors (see below), whose sum is σ = 522973224. Its totient is φ = 87162200.

The previous prime is 261486553. The next prime is 261486613. The reversal of 261486606 is 606684162.

It is a sphenic number, since it is the product of 3 distinct primes.

261486606 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21790545 + ... + 21790556.

It is an arithmetic number, because the mean of its divisors is an integer number (65371653).

Almost surely, 2^261486606 is an apocalyptic number.

261486606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261486606 is a wasteful number, since it uses less digits than its factorization.

261486606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43581106.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 261486606 is about 16170.5474860934. The cubic root of 261486606 is about 639.4645635616.

The spelling of 261486606 in words is "two hundred sixty-one million, four hundred eighty-six thousand, six hundred six".