61908380 has 24 divisors (see below), whose sum is σ = 131791632. Its totient is φ = 24423552.

The previous prime is 61908377. The next prime is 61908383. The reversal of 61908380 is 8380916.

61908380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61908377) and next prime (61908383).

It is a self number, because there is not a number n which added to its sum of digits gives 61908380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61908383) 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, 19742 + ... + 22661.

It is an arithmetic number, because the mean of its divisors is an integer number (5491318).

Almost surely, 2^61908380 is an apocalyptic number.

It is an amenable number.

61908380 is an abundant number, since it is smaller than the sum of its proper divisors (69883252).

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

61908380 is a wasteful number, since it uses less digits than its factorization.

61908380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42485 (or 42483 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 61908380 is about 7868.1878472746. The cubic root of 61908380 is about 395.5941067763.

The spelling of 61908380 in words is "sixty-one million, nine hundred eight thousand, three hundred eighty".