61767372 has 12 divisors (see below), whose sum is σ = 144123896. Its totient is φ = 20589120.

The previous prime is 61767331. The next prime is 61767379. The reversal of 61767372 is 27376716.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 61767372.

It is not an unprimeable number, because it can be changed into a prime (61767379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2573629 + ... + 2573652.

Almost surely, 2^61767372 is an apocalyptic number.

It is an amenable number.

61767372 is an abundant number, since it is smaller than the sum of its proper divisors (82356524).

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

61767372 is a wasteful number, since it uses less digits than its factorization.

61767372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5147288 (or 5147286 counting only the distinct ones).

The product of its digits is 74088, while the sum is 39.

The square root of 61767372 is about 7859.2220989103. Note that the first 3 decimals coincide. The cubic root of 61767372 is about 395.2935317504.

The spelling of 61767372 in words is "sixty-one million, seven hundred sixty-seven thousand, three hundred seventy-two".