261157714 has 8 divisors (see below), whose sum is σ = 398158668. Its totient is φ = 128438160.

The previous prime is 261157711. The next prime is 261157727. The reversal of 261157714 is 417751162.

It can be written as a sum of positive squares in 2 ways, for example, as 257057089 + 4100625 = 16033^2 + 2025^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 261157714.

It is not an unprimeable number, because it can be changed into a prime (261157711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070197 + ... + 1070440.

Almost surely, 2^261157714 is an apocalyptic number.

261157714 is a deficient number, since it is larger than the sum of its proper divisors (137000954).

261157714 is a wasteful number, since it uses less digits than its factorization.

261157714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140700.

The product of its digits is 11760, while the sum is 34.

The square root of 261157714 is about 16160.3748100098. The cubic root of 261157714 is about 639.1963496742.

The spelling of 261157714 in words is "two hundred sixty-one million, one hundred fifty-seven thousand, seven hundred fourteen".