61956117 has 8 divisors (see below), whose sum is σ = 91786880. Its totient is φ = 41304060.

The previous prime is 61956113. The next prime is 61956157. The reversal of 61956117 is 71165916.

It is a happy number.

It is not a de Polignac number, because 61956117 - 2² = 61956113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61956113) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1147309 + ... + 1147362.

It is an arithmetic number, because the mean of its divisors is an integer number (11473360).

Almost surely, 2^61956117 is an apocalyptic number.

It is an amenable number.

61956117 is a deficient number, since it is larger than the sum of its proper divisors (29830763).

61956117 is a wasteful number, since it uses less digits than its factorization.

61956117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294680 (or 2294674 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 61956117 is about 7871.2208074733. The cubic root of 61956117 is about 395.6957603493.

The spelling of 61956117 in words is "sixty-one million, nine hundred fifty-six thousand, one hundred seventeen".