61273743 has 8 divisors (see below), whose sum is σ = 82732800. Its totient is φ = 40331928.

The previous prime is 61273733. The next prime is 61273747. The reversal of 61273743 is 34737216.

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

It is not a de Polignac number, because 61273743 - 2¹⁰ = 61272719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61273747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129033 + ... + 129506.

It is an arithmetic number, because the mean of its divisors is an integer number (10341600).

Almost surely, 2^61273743 is an apocalyptic number.

61273743 is a deficient number, since it is larger than the sum of its proper divisors (21459057).

61273743 is a wasteful number, since it uses less digits than its factorization.

61273743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258621.

The product of its digits is 21168, while the sum is 33.

The square root of 61273743 is about 7827.7546589044. The cubic root of 61273743 is about 394.2376858675.

It can be divided in two parts, 6127 and 3743, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 61273743 in words is "sixty-one million, two hundred seventy-three thousand, seven hundred forty-three".