61667532 has 18 divisors (see below), whose sum is σ = 155881908. Its totient is φ = 20555832.

The previous prime is 61667527. The next prime is 61667561. The reversal of 61667532 is 23576616.

61667532 is a `hidden beast` number, since 61 + 6 + 67 + 532 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1712987 = 61667532 / (6 + 1 + 6 + 6 + 7 + 5 + 3 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 856458 + ... + 856529.

It is an arithmetic number, because the mean of its divisors is an integer number (8660106).

Almost surely, 2^61667532 is an apocalyptic number.

It is an amenable number.

61667532 is an abundant number, since it is smaller than the sum of its proper divisors (94214376).

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

61667532 is a wasteful number, since it uses less digits than its factorization.

61667532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712997 (or 1712992 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 61667532 is about 7852.8677564314. The cubic root of 61667532 is about 395.0804344024.

The spelling of 61667532 in words is "sixty-one million, six hundred sixty-seven thousand, five hundred thirty-two".