261077900 has 36 divisors (see below), whose sum is σ = 569546880. Its totient is φ = 103876800.

The previous prime is 261077893. The next prime is 261077909. The reversal of 261077900 is 9770162.

261077900 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (261077909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12266 + ... + 25934.

Almost surely, 2^261077900 is an apocalyptic number.

261077900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261077900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284773440).

261077900 is an abundant number, since it is smaller than the sum of its proper divisors (308468980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261077900 is a wasteful number, since it uses less digits than its factorization.

261077900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13874 (or 13867 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 261077900 is about 16157.9051860073. The cubic root of 261077900 is about 639.1312268094.

The spelling of 261077900 in words is "two hundred sixty-one million, seventy-seven thousand, nine hundred".