61966949 has 8 divisors (see below), whose sum is σ = 69249600. Its totient is φ = 54959200.

The previous prime is 61966937. The next prime is 61966969. The reversal of 61966949 is 94966916.

It is a happy number.

61966949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61966949 - 2⁸ = 61966693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61966897 and 61966906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61966909) 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, 68249 + ... + 69150.

It is an arithmetic number, because the mean of its divisors is an integer number (8656200).

Almost surely, 2^61966949 is an apocalyptic number.

It is an amenable number.

61966949 is a deficient number, since it is larger than the sum of its proper divisors (7282651).

61966949 is a wasteful number, since it uses less digits than its factorization.

61966949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137451.

The product of its digits is 629856, while the sum is 50.

The square root of 61966949 is about 7871.9088536390. The cubic root of 61966949 is about 395.7188192869.

The spelling of 61966949 in words is "sixty-one million, nine hundred sixty-six thousand, nine hundred forty-nine".