61908 has 48 divisors (see below), whose sum is σ = 182784. Its totient is φ = 15840.

The previous prime is 61879. The next prime is 61909. The reversal of 61908 is 80916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61909) by changing a digit.

61908 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 891 + ... + 957.

It is an arithmetic number, because the mean of its divisors is an integer number (3808).

2⁶¹⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91392).

61908 is an abundant number, since it is smaller than the sum of its proper divisors (120876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61908 is a wasteful number, since it uses less digits than its factorization.

61908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 61908 is about 248.8131829305. The cubic root of 61908 is about 39.5593297376.

It can be divided in two parts, 61 and 908, that added together give a palindrome (969).

The spelling of 61908 in words is "sixty-one thousand, nine hundred eight".