61173973 has 16 divisors (see below), whose sum is σ = 75288960. Its totient is φ = 48508416.

The previous prime is 61173953. The next prime is 61173979. The reversal of 61173973 is 37937116.

It is a cyclic number.

It is not a de Polignac number, because 61173973 - 2⁵ = 61173941 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 (61173979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2665 + ... + 11377.

It is an arithmetic number, because the mean of its divisors is an integer number (4705560).

Almost surely, 2^61173973 is an apocalyptic number.

It is an amenable number.

61173973 is a deficient number, since it is larger than the sum of its proper divisors (14114987).

61173973 is a wasteful number, since it uses less digits than its factorization.

61173973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8796.

The product of its digits is 23814, while the sum is 37.

The square root of 61173973 is about 7821.3792261979. The cubic root of 61173973 is about 394.0235949177.

The spelling of 61173973 in words is "sixty-one million, one hundred seventy-three thousand, nine hundred seventy-three".