61173861 has 8 divisors (see below), whose sum is σ = 93217344. Its totient is φ = 34956480.

The previous prime is 61173851. The next prime is 61173869. The reversal of 61173861 is 16837116.

61173861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61173861 - 2⁶ = 61173797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61173869) 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, 1456500 + ... + 1456541.

It is an arithmetic number, because the mean of its divisors is an integer number (11652168).

Almost surely, 2^61173861 is an apocalyptic number.

It is an amenable number.

61173861 is a deficient number, since it is larger than the sum of its proper divisors (32043483).

61173861 is a wasteful number, since it uses less digits than its factorization.

61173861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913051.

The product of its digits is 6048, while the sum is 33.

The square root of 61173861 is about 7821.3720663321. The cubic root of 61173861 is about 394.0233544523.

The spelling of 61173861 in words is "sixty-one million, one hundred seventy-three thousand, eight hundred sixty-one".