261736632 has 48 divisors (see below), whose sum is σ = 709656480. Its totient is φ = 87148800.

The previous prime is 261736621. The next prime is 261736633. The reversal of 261736632 is 236637162.

261736632 is a `hidden beast` number, since 2 + 6 + 17 + 3 + 6 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261736633) 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, 96657 + ... + 99327.

It is an arithmetic number, because the mean of its divisors is an integer number (14784510).

Almost surely, 2^261736632 is an apocalyptic number.

It is an amenable number.

261736632 is an abundant number, since it is smaller than the sum of its proper divisors (447919848).

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

261736632 is a wasteful number, since it uses less digits than its factorization.

261736632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044 (or 4037 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 261736632 is about 16178.2765460354. The cubic root of 261736632 is about 639.6683112003.

The spelling of 261736632 in words is "two hundred sixty-one million, seven hundred thirty-six thousand, six hundred thirty-two".