61065973 has 4 divisors (see below), whose sum is σ = 61839040. Its totient is φ = 60292908.

The previous prime is 61065971. The next prime is 61065997. The reversal of 61065973 is 37956016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61065973 - 2¹ = 61065971 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 (61065971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386415 + ... + 386572.

It is an arithmetic number, because the mean of its divisors is an integer number (15459760).

Almost surely, 2^61065973 is an apocalyptic number.

It is an amenable number.

61065973 is a deficient number, since it is larger than the sum of its proper divisors (773067).

61065973 is an equidigital number, since it uses as much as digits as its factorization.

61065973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773066.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 61065973 is about 7814.4720231120. The cubic root of 61065973 is about 393.7915811299.

The spelling of 61065973 in words is "sixty-one million, sixty-five thousand, nine hundred seventy-three".