61867172 has 6 divisors (see below), whose sum is σ = 108267558. Its totient is φ = 30933584.

The previous prime is 61867163. The next prime is 61867177. The reversal of 61867172 is 27176816.

It can be written as a sum of positive squares in only one way, i.e., 61371556 + 495616 = 7834^2 + 704^2 .

It is not an unprimeable number, because it can be changed into a prime (61867177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7733393 + ... + 7733400.

It is an arithmetic number, because the mean of its divisors is an integer number (18044593).

Almost surely, 2^61867172 is an apocalyptic number.

It is an amenable number.

61867172 is a deficient number, since it is larger than the sum of its proper divisors (46400386).

61867172 is a wasteful number, since it uses less digits than its factorization.

61867172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15466797 (or 15466795 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 61867172 is about 7865.5687651943. The cubic root of 61867172 is about 395.5063143523.

The spelling of 61867172 in words is "sixty-one million, eight hundred sixty-seven thousand, one hundred seventy-two".