61767968 has 12 divisors (see below), whose sum is σ = 121605750. Its totient is φ = 30883968.

The previous prime is 61767943. The next prime is 61767991. The reversal of 61767968 is 86976716.

It can be written as a sum of positive squares in only one way, i.e., 47720464 + 14047504 = 6908^2 + 3748^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965093 + ... + 965156.

Almost surely, 2^61767968 is an apocalyptic number.

It is an amenable number.

61767968 is a deficient number, since it is larger than the sum of its proper divisors (59837782).

61767968 is a wasteful number, since it uses less digits than its factorization.

61767968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930259 (or 1930251 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 61767968 is about 7859.2600160575. The cubic root of 61767968 is about 395.2948031562.

The spelling of 61767968 in words is "sixty-one million, seven hundred sixty-seven thousand, nine hundred sixty-eight".