261304662 has 16 divisors (see below), whose sum is σ = 523298160. Its totient is φ = 86986752.

The previous prime is 261304661. The next prime is 261304669. The reversal of 261304662 is 266403162.

261304662 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261304661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23703 + ... + 32930.

It is an arithmetic number, because the mean of its divisors is an integer number (32706135).

Almost surely, 2^261304662 is an apocalyptic number.

261304662 is an abundant number, since it is smaller than the sum of its proper divisors (261993498).

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

261304662 is a wasteful number, since it uses less digits than its factorization.

261304662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57407.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 261304662 is about 16164.9207235916. The cubic root of 261304662 is about 639.3162146810.

The spelling of 261304662 in words is "two hundred sixty-one million, three hundred four thousand, six hundred sixty-two".