61908716 has 12 divisors (see below), whose sum is σ = 108433920. Its totient is φ = 30927600.

The previous prime is 61908703. The next prime is 61908719. The reversal of 61908716 is 61780916.

It is a self number, because there is not a number n which added to its sum of digits gives 61908716.

It is not an unprimeable number, because it can be changed into a prime (61908719) 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, 935 + ... + 11166.

It is an arithmetic number, because the mean of its divisors is an integer number (9036160).

Almost surely, 2^61908716 is an apocalyptic number.

It is an amenable number.

61908716 is a deficient number, since it is larger than the sum of its proper divisors (46525204).

61908716 is a wasteful number, since it uses less digits than its factorization.

61908716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13384 (or 13382 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 61908716 is about 7868.2091990490. The cubic root of 61908716 is about 395.5948224542.

The spelling of 61908716 in words is "sixty-one million, nine hundred eight thousand, seven hundred sixteen".