61965968 has 10 divisors (see below), whose sum is σ = 120059094. Its totient is φ = 30982976.

The previous prime is 61965949. The next prime is 61965991. The reversal of 61965968 is 86956916.

It can be written as a sum of positive squares in only one way, i.e., 56731024 + 5234944 = 7532^2 + 2288^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1936421 + ... + 1936452.

Almost surely, 2^61965968 is an apocalyptic number.

It is an amenable number.

61965968 is a deficient number, since it is larger than the sum of its proper divisors (58093126).

61965968 is a wasteful number, since it uses less digits than its factorization.

61965968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872881 (or 3872875 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 61965968 is about 7871.8465432197. The cubic root of 61965968 is about 395.7167310650.

The spelling of 61965968 in words is "sixty-one million, nine hundred sixty-five thousand, nine hundred sixty-eight".