261334662 has 16 divisors (see below), whose sum is σ = 522827760. Its totient is φ = 87085152.

The previous prime is 261334627. The next prime is 261334673. The reversal of 261334662 is 266433162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35448 + ... + 42180.

It is an arithmetic number, because the mean of its divisors is an integer number (32676735).

Almost surely, 2^261334662 is an apocalyptic number.

261334662 is an abundant number, since it is smaller than the sum of its proper divisors (261493098).

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

261334662 is a wasteful number, since it uses less digits than its factorization.

261334662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13207.

The product of its digits is 31104, while the sum is 33.

The square root of 261334662 is about 16165.8486322247. The cubic root of 261334662 is about 639.3406800596.

The spelling of 261334662 in words is "two hundred sixty-one million, three hundred thirty-four thousand, six hundred sixty-two".