61655973 has 8 divisors (see below), whose sum is σ = 82634688. Its totient is φ = 40890624.

The previous prime is 61655953. The next prime is 61655983. The reversal of 61655973 is 37955616.

It is a happy number.

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

It is not a de Polignac number, because 61655973 - 2⁸ = 61655717 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61655953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52665 + ... + 53822.

It is an arithmetic number, because the mean of its divisors is an integer number (10329336).

Almost surely, 2^61655973 is an apocalyptic number.

It is an amenable number.

61655973 is a deficient number, since it is larger than the sum of its proper divisors (20978715).

61655973 is a wasteful number, since it uses less digits than its factorization.

61655973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106683.

The product of its digits is 170100, while the sum is 42.

The square root of 61655973 is about 7852.1317487673. The cubic root of 61655973 is about 395.0557481536.

The spelling of 61655973 in words is "sixty-one million, six hundred fifty-five thousand, nine hundred seventy-three".