61365673 has 4 divisors (see below), whose sum is σ = 61438468. Its totient is φ = 61292880.

The previous prime is 61365641. The next prime is 61365683. The reversal of 61365673 is 37656316.

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 6487209 + 54878464 = 2547^2 + 7408^2 .

It is a cyclic number.

It is not a de Polignac number, because 61365673 - 2⁵ = 61365641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61365683) 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, 35118 + ... + 36823.

It is an arithmetic number, because the mean of its divisors is an integer number (15359617).

Almost surely, 2^61365673 is an apocalyptic number.

It is an amenable number.

61365673 is a deficient number, since it is larger than the sum of its proper divisors (72795).

61365673 is an equidigital number, since it uses as much as digits as its factorization.

61365673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72794.

The product of its digits is 68040, while the sum is 37.

The square root of 61365673 is about 7833.6245123187. The cubic root of 61365673 is about 394.4347477672.

The spelling of 61365673 in words is "sixty-one million, three hundred sixty-five thousand, six hundred seventy-three".