61761532 has 48 divisors (see below), whose sum is σ = 133378560. Its totient is φ = 24437952.

The previous prime is 61761523. The next prime is 61761541. The reversal of 61761532 is 23516716.

It is an interprime number because it is at equal distance from previous prime (61761523) and next prime (61761541).

It is a junction number, because it is equal to n+sod(n) for n = 61761494 and 61761503.

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, 17023 + ... + 20329.

It is an arithmetic number, because the mean of its divisors is an integer number (2778720).

Almost surely, 2^61761532 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 61761532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66689280).

61761532 is an abundant number, since it is smaller than the sum of its proper divisors (71617028).

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

61761532 is a wasteful number, since it uses less digits than its factorization.

61761532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370 (or 3368 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 61761532 is about 7858.8505520846. The cubic root of 61761532 is about 395.2810732473.

The spelling of 61761532 in words is "sixty-one million, seven hundred sixty-one thousand, five hundred thirty-two".