61968055 has 4 divisors (see below), whose sum is σ = 74361672. Its totient is φ = 49574440.

The previous prime is 61968037. The next prime is 61968059. The reversal of 61968055 is 55086916.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61968055 - 2²³ = 53579447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61967999 and 61968017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61968059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6196801 + ... + 6196810.

It is an arithmetic number, because the mean of its divisors is an integer number (18590418).

Almost surely, 2^61968055 is an apocalyptic number.

61968055 is a deficient number, since it is larger than the sum of its proper divisors (12393617).

61968055 is a wasteful number, since it uses less digits than its factorization.

61968055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12393616.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 61968055 is about 7871.9791031227. The cubic root of 61968055 is about 395.7211735656.

The spelling of 61968055 in words is "sixty-one million, nine hundred sixty-eight thousand, fifty-five".