61207073 has 4 divisors (see below), whose sum is σ = 61227540. Its totient is φ = 61186608.

The previous prime is 61207063. The next prime is 61207127. The reversal of 61207073 is 37070216.

61207073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1423249 + 59783824 = 1193^2 + 7732^2 .

It is a cyclic number.

It is not a de Polignac number, because 61207073 - 2⁶ = 61207009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61207043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4778 + ... + 12051.

It is an arithmetic number, because the mean of its divisors is an integer number (15306885).

Almost surely, 2^61207073 is an apocalyptic number.

It is an amenable number.

61207073 is a deficient number, since it is larger than the sum of its proper divisors (20467).

61207073 is a wasteful number, since it uses less digits than its factorization.

61207073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20466.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 61207073 is about 7823.4949351297. The cubic root of 61207073 is about 394.0946481711.

Adding to 61207073 its reverse (37070216), we get a palindrome (98277289).

The spelling of 61207073 in words is "sixty-one million, two hundred seven thousand, seventy-three".