261655246 has 8 divisors (see below), whose sum is σ = 396369144. Its totient is φ = 129532200.

The previous prime is 261655237. The next prime is 261655267. The reversal of 261655246 is 642556162.

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

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, 647460 + ... + 647863.

It is an arithmetic number, because the mean of its divisors is an integer number (49546143).

Almost surely, 2^261655246 is an apocalyptic number.

261655246 is a deficient number, since it is larger than the sum of its proper divisors (134713898).

261655246 is a wasteful number, since it uses less digits than its factorization.

261655246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295426.

The product of its digits is 86400, while the sum is 37.

The square root of 261655246 is about 16175.7610640118. The cubic root of 261655246 is about 639.6020035260.

The spelling of 261655246 in words is "two hundred sixty-one million, six hundred fifty-five thousand, two hundred forty-six".