261046366 has 48 divisors (see below), whose sum is σ = 478411776. Its totient is φ = 104450544.

The previous prime is 261046349. The next prime is 261046367. The reversal of 261046366 is 663640162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261046367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 711115 + ... + 711481.

It is an arithmetic number, because the mean of its divisors is an integer number (9966912).

Almost surely, 2^261046366 is an apocalyptic number.

261046366 is a deficient number, since it is larger than the sum of its proper divisors (217365410).

261046366 is a wasteful number, since it uses less digits than its factorization.

261046366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 261046366 is about 16156.9293493535. The cubic root of 261046366 is about 639.1054935249.

The spelling of 261046366 in words is "two hundred sixty-one million, forty-six thousand, three hundred sixty-six".