61387366 has 16 divisors (see below), whose sum is σ = 99549360. Its totient is φ = 28291680.

The previous prime is 61387351. The next prime is 61387387. The reversal of 61387366 is 66378316.

61387366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 20425 + ... + 23236.

It is an arithmetic number, because the mean of its divisors is an integer number (6221835).

Almost surely, 2^61387366 is an apocalyptic number.

61387366 is a deficient number, since it is larger than the sum of its proper divisors (38161994).

61387366 is a wasteful number, since it uses less digits than its factorization.

61387366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43719.

The product of its digits is 108864, while the sum is 40.

The square root of 61387366 is about 7835.0089980803. The cubic root of 61387366 is about 394.4812203553.

The spelling of 61387366 in words is "sixty-one million, three hundred eighty-seven thousand, three hundred sixty-six".