261062136 has 64 divisors (see below), whose sum is σ = 734400000. Its totient is φ = 85913568.

The previous prime is 261062119. The next prime is 261062161. The reversal of 261062136 is 631260162.

261062136 is a `hidden beast` number, since 2 + 6 + 1 + 0 + 621 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9415 + ... + 24713.

It is an arithmetic number, because the mean of its divisors is an integer number (11475000).

Almost surely, 2^261062136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261062136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367200000).

261062136 is an abundant number, since it is smaller than the sum of its proper divisors (473337864).

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

261062136 is a wasteful number, since it uses less digits than its factorization.

261062136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393 (or 15383 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 261062136 is about 16157.4173678840. The cubic root of 261062136 is about 639.1183628743.

It can be divided in two parts, 2610 and 62136, that added together give a palindrome (64746).

The spelling of 261062136 in words is "two hundred sixty-one million, sixty-two thousand, one hundred thirty-six".