61366 has 8 divisors (see below), whose sum is σ = 93744. Its totient is φ = 30120.

The previous prime is 61363. The next prime is 61379. The reversal of 61366 is 66316.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130 + ... + 373.

It is an arithmetic number, because the mean of its divisors is an integer number (11718).

2⁶¹³⁶⁶ is an apocalyptic number.

61366 is a deficient number, since it is larger than the sum of its proper divisors (32378).

61366 is a wasteful number, since it uses less digits than its factorization.

61366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566.

The product of its digits is 648, while the sum is 22.

The square root of 61366 is about 247.7216179505. The cubic root of 61366 is about 39.4435448376.

Subtracting 61366 from its reverse (66316), we obtain a triangular number (4950 = T₉₉).

The spelling of 61366 in words is "sixty-one thousand, three hundred sixty-six".