261067516 has 24 divisors (see below), whose sum is σ = 470756160. Its totient is φ = 126615552.

The previous prime is 261067451. The next prime is 261067537. The reversal of 261067516 is 615760162.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15100 + ... + 27388.

It is an arithmetic number, because the mean of its divisors is an integer number (19614840).

Almost surely, 2^261067516 is an apocalyptic number.

It is an amenable number.

261067516 is a deficient number, since it is larger than the sum of its proper divisors (209688644).

261067516 is a wasteful number, since it uses less digits than its factorization.

261067516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12453 (or 12451 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 261067516 is about 16157.5838540297. The cubic root of 261067516 is about 639.1227531869.

The spelling of 261067516 in words is "two hundred sixty-one million, sixty-seven thousand, five hundred sixteen".