61918 has 8 divisors (see below), whose sum is σ = 94248. Its totient is φ = 30504.

The previous prime is 61909. The next prime is 61927. The reversal of 61918 is 81916.

It is an interprime number because it is at equal distance from previous prime (61909) and next prime (61927).

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

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 61892 and 61901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21 + ... + 352.

It is an arithmetic number, because the mean of its divisors is an integer number (11781).

2⁶¹⁹¹⁸ is an apocalyptic number.

61918 is a deficient number, since it is larger than the sum of its proper divisors (32330).

61918 is a wasteful number, since it uses less digits than its factorization.

61918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458.

The product of its digits is 432, while the sum is 25.

The square root of 61918 is about 248.8332775173. The cubic root of 61918 is about 39.5614596292.

It can be divided in two parts, 61 and 918, that added together give a palindrome (979).

The spelling of 61918 in words is "sixty-one thousand, nine hundred eighteen".