61366987 has 8 divisors (see below), whose sum is σ = 69254640. Its totient is φ = 53864160.

The previous prime is 61366973. The next prime is 61366993. The reversal of 61366987 is 78966316.

61366987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61366987 - 2¹⁹ = 60842699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61366997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95868 + ... + 96505.

It is an arithmetic number, because the mean of its divisors is an integer number (8656830).

Almost surely, 2^61366987 is an apocalyptic number.

61366987 is a deficient number, since it is larger than the sum of its proper divisors (7887653).

61366987 is a wasteful number, since it uses less digits than its factorization.

61366987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192413.

The product of its digits is 326592, while the sum is 46.

The square root of 61366987 is about 7833.7083810926. The cubic root of 61366987 is about 394.4375630413.

It can be divided in two parts, 613 and 66987, that added together give a square (67600 = 260²).

The spelling of 61366987 in words is "sixty-one million, three hundred sixty-six thousand, nine hundred eighty-seven".