61113977 has 8 divisors (see below), whose sum is σ = 62152776. Its totient is φ = 60083712.

The previous prime is 61113971. The next prime is 61114003. The reversal of 61113977 is 77931116.

61113977 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 4 ways, for example, as 11397376 + 49716601 = 3376^2 + 7051^2 .

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 61113977 - 2⁸ = 61113721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61113971) 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, 13223 + ... + 17235.

It is an arithmetic number, because the mean of its divisors is an integer number (7769097).

Almost surely, 2^61113977 is an apocalyptic number.

It is an amenable number.

61113977 is a deficient number, since it is larger than the sum of its proper divisors (1038799).

61113977 is a wasteful number, since it uses less digits than its factorization.

61113977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267.

The product of its digits is 7938, while the sum is 35.

The square root of 61113977 is about 7817.5429004259. The cubic root of 61113977 is about 393.8947407070.

The spelling of 61113977 in words is "sixty-one million, one hundred thirteen thousand, nine hundred seventy-seven".