261828706 has 8 divisors (see below), whose sum is σ = 402322284. Its totient is φ = 127721280.

The previous prime is 261828703. The next prime is 261828709. The reversal of 261828706 is 607828162.

261828706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (261828703) and next prime (261828709).

It can be written as a sum of positive squares in 2 ways, for example, as 177023025 + 84805681 = 13305^2 + 9209^2 .

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

It is not an unprimeable number, because it can be changed into a prime (261828701) 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, 1596435 + ... + 1596598.

Almost surely, 2^261828706 is an apocalyptic number.

261828706 is a deficient number, since it is larger than the sum of its proper divisors (140493578).

261828706 is a wasteful number, since it uses less digits than its factorization.

261828706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193076.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 261828706 is about 16181.1219017718. The cubic root of 261828706 is about 639.7433101471.

The spelling of 261828706 in words is "two hundred sixty-one million, eight hundred twenty-eight thousand, seven hundred six".