61968481 has 8 divisors (see below), whose sum is σ = 65321280. Its totient is φ = 58624848.

The previous prime is 61968479. The next prime is 61968493. The reversal of 61968481 is 18486916.

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

It is a cyclic number.

It is not a de Polignac number, because 61968481 - 2¹ = 61968479 is a prime.

It is a super-2 number, since 2×61968481² = 7680185274894722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61968421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15015 + ... + 18691.

It is an arithmetic number, because the mean of its divisors is an integer number (8165160).

Almost surely, 2^61968481 is an apocalyptic number.

It is an amenable number.

61968481 is a deficient number, since it is larger than the sum of its proper divisors (3352799).

61968481 is a wasteful number, since it uses less digits than its factorization.

61968481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583.

The product of its digits is 82944, while the sum is 43.

The square root of 61968481 is about 7872.0061610748. The cubic root of 61968481 is about 395.7220803599.

The spelling of 61968481 in words is "sixty-one million, nine hundred sixty-eight thousand, four hundred eighty-one".