261254677 has 8 divisors (see below), whose sum is σ = 272986560. Its totient is φ = 249553920.

The previous prime is 261254671. The next prime is 261254681. The reversal of 261254677 is 776452162.

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

It is a cyclic number.

It is not a de Polignac number, because 261254677 - 2⁷ = 261254549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261254671) 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, 10302 + ... + 25072.

It is an arithmetic number, because the mean of its divisors is an integer number (34123320).

Almost surely, 2^261254677 is an apocalyptic number.

It is an amenable number.

261254677 is a deficient number, since it is larger than the sum of its proper divisors (11731883).

261254677 is a wasteful number, since it uses less digits than its factorization.

261254677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15563.

The product of its digits is 141120, while the sum is 40.

The square root of 261254677 is about 16163.3745548385. The cubic root of 261254677 is about 639.2754471230.

The spelling of 261254677 in words is "two hundred sixty-one million, two hundred fifty-four thousand, six hundred seventy-seven".