261067960 has 16 divisors (see below), whose sum is σ = 587403000. Its totient is φ = 104427168.

The previous prime is 261067949. The next prime is 261067969. The reversal of 261067960 is 69760162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261067969) 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, 3263310 + ... + 3263389.

Almost surely, 2^261067960 is an apocalyptic number.

261067960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261067960 is an abundant number, since it is smaller than the sum of its proper divisors (326335040).

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

261067960 is a wasteful number, since it uses less digits than its factorization.

261067960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6526710 (or 6526706 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 261067960 is about 16157.5975937019. The cubic root of 261067960 is about 639.1231155074.

The spelling of 261067960 in words is "two hundred sixty-one million, sixty-seven thousand, nine hundred sixty".