261462486 has 8 divisors (see below), whose sum is σ = 522924984. Its totient is φ = 87154160.

The previous prime is 261462479. The next prime is 261462493. The reversal of 261462486 is 684264162.

It is an interprime number because it is at equal distance from previous prime (261462479) and next prime (261462493).

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

261462486 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21788535 + ... + 21788546.

It is an arithmetic number, because the mean of its divisors is an integer number (65365623).

Almost surely, 2^261462486 is an apocalyptic number.

261462486 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.

261462486 is a wasteful number, since it uses less digits than its factorization.

261462486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43577086.

The product of its digits is 110592, while the sum is 39.

The square root of 261462486 is about 16169.8016685425. The cubic root of 261462486 is about 639.4449011657. Note that the first 3 decimals are identical.

The spelling of 261462486 in words is "two hundred sixty-one million, four hundred sixty-two thousand, four hundred eighty-six".