61011616 has 12 divisors (see below), whose sum is σ = 120116682. Its totient is φ = 30505792.

The previous prime is 61011581. The next prime is 61011619. The reversal of 61011616 is 61611016.

61011616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 57699216 + 3312400 = 7596^2 + 1820^2 .

It is not an unprimeable number, because it can be changed into a prime (61011619) 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 as a sum of consecutive naturals, namely, 953275 + ... + 953338.

Almost surely, 2^61011616 is an apocalyptic number.

It is an amenable number.

61011616 is a deficient number, since it is larger than the sum of its proper divisors (59105066).

61011616 is a wasteful number, since it uses less digits than its factorization.

61011616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906623 (or 1906615 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 61011616 is about 7810.9932787066. The cubic root of 61011616 is about 393.6747038015.

The spelling of 61011616 in words is "sixty-one million, eleven thousand, six hundred sixteen".