61986132 has 72 divisors (see below), whose sum is σ = 177646560. Its totient is φ = 18066240.

The previous prime is 61986107. The next prime is 61986139. The reversal of 61986132 is 23168916.

61986132 is a `hidden beast` number, since 619 + 8 + 6 + 1 + 32 = 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 (61986139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5407 + ... + 12377.

Almost surely, 2^61986132 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 61986132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88823280).

61986132 is an abundant number, since it is smaller than the sum of its proper divisors (115660428).

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

61986132 is a wasteful number, since it uses less digits than its factorization.

61986132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013 (or 7008 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 61986132 is about 7873.1272058820. The cubic root of 61986132 is about 395.7596490682.

The spelling of 61986132 in words is "sixty-one million, nine hundred eighty-six thousand, one hundred thirty-two".