261406203 has 8 divisors (see below), whose sum is σ = 360560400. Its totient is φ = 168261408.

The previous prime is 261406169. The next prime is 261406207. The reversal of 261406203 is 302604162.

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

It is not a de Polignac number, because 261406203 - 2⁹ = 261405691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261406207) 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, 1502248 + ... + 1502421.

It is an arithmetic number, because the mean of its divisors is an integer number (45070050).

Almost surely, 2^261406203 is an apocalyptic number.

261406203 is a deficient number, since it is larger than the sum of its proper divisors (99154197).

261406203 is a wasteful number, since it uses less digits than its factorization.

261406203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004701.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 261406203 is about 16168.0612010222. The cubic root of 261406203 is about 639.3990150928.

The spelling of 261406203 in words is "two hundred sixty-one million, four hundred six thousand, two hundred three".