261300998 has 16 divisors (see below), whose sum is σ = 448204320. Its totient is φ = 111921216.

The previous prime is 261300961. The next prime is 261301021. The reversal of 261300998 is 899003162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25808 + ... + 34476.

It is an arithmetic number, because the mean of its divisors is an integer number (28012770).

Almost surely, 2^261300998 is an apocalyptic number.

261300998 is a deficient number, since it is larger than the sum of its proper divisors (186903322).

261300998 is a wasteful number, since it uses less digits than its factorization.

261300998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10831.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 261300998 is about 16164.8073913672. The cubic root of 261300998 is about 639.3132265144.

The spelling of 261300998 in words is "two hundred sixty-one million, three hundred thousand, nine hundred ninety-eight".