61773673 has 8 divisors (see below), whose sum is σ = 67781448. Its totient is φ = 55945344.

The previous prime is 61773667. The next prime is 61773697. The reversal of 61773673 is 37637716.

It can be written as a sum of positive squares in 4 ways, for example, as 22686169 + 39087504 = 4763^2 + 6252^2 .

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

It is not a de Polignac number, because 61773673 - 2⁵ = 61773641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61773623) 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, 44140 + ... + 45517.

It is an arithmetic number, because the mean of its divisors is an integer number (8472681).

Almost surely, 2^61773673 is an apocalyptic number.

It is an amenable number.

61773673 is a deficient number, since it is larger than the sum of its proper divisors (6007775).

61773673 is a wasteful number, since it uses less digits than its factorization.

61773673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89723.

The product of its digits is 111132, while the sum is 40.

The square root of 61773673 is about 7859.6229553332. The cubic root of 61773673 is about 395.3069728265.

The spelling of 61773673 in words is "sixty-one million, seven hundred seventy-three thousand, six hundred seventy-three".