61109973 has 12 divisors (see below), whose sum is σ = 88452000. Its totient is φ = 40655976.

The previous prime is 61109969. The next prime is 61109999. The reversal of 61109973 is 37990116.

It is not a de Polignac number, because 61109973 - 2² = 61109969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61109933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2223 + ... + 11276.

It is an arithmetic number, because the mean of its divisors is an integer number (7371000).

Almost surely, 2^61109973 is an apocalyptic number.

It is an amenable number.

61109973 is a deficient number, since it is larger than the sum of its proper divisors (27342027).

61109973 is a wasteful number, since it uses less digits than its factorization.

61109973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14008 (or 14005 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 61109973 is about 7817.2868055355. The cubic root of 61109973 is about 393.8861382614.

The spelling of 61109973 in words is "sixty-one million, one hundred nine thousand, nine hundred seventy-three".