61730873 has 8 divisors (see below), whose sum is σ = 64881600. Its totient is φ = 58619088.

The previous prime is 61730869. The next prime is 61730899. The reversal of 61730873 is 37803716.

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

It is not a de Polignac number, because 61730873 - 2² = 61730869 is a prime.

It is a super-3 number, since 3×61730873³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61730803) 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, 6458 + ... + 12851.

It is an arithmetic number, because the mean of its divisors is an integer number (8110200).

Almost surely, 2^61730873 is an apocalyptic number.

It is an amenable number.

61730873 is a deficient number, since it is larger than the sum of its proper divisors (3150727).

61730873 is a wasteful number, since it uses less digits than its factorization.

61730873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19471.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 61730873 is about 7856.8997066273. The cubic root of 61730873 is about 395.2156553520.

The spelling of 61730873 in words is "sixty-one million, seven hundred thirty thousand, eight hundred seventy-three".