71742773 has 8 divisors (see below), whose sum is σ = 77277696. Its totient is φ = 66409200.

The previous prime is 71742767. The next prime is 71742779. The reversal of 71742773 is 37724717.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71742767) and next prime (71742779).

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

It is a cyclic number.

It is not a de Polignac number, because 71742773 - 2⁴ = 71742757 is a prime.

It is a super-3 number, since 3×71742773³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71742779) 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 7 ways as a sum of consecutive naturals, for example, 49598 + ... + 51023.

It is an arithmetic number, because the mean of its divisors is an integer number (9659712).

Almost surely, 2^71742773 is an apocalyptic number.

It is an amenable number.

71742773 is a deficient number, since it is larger than the sum of its proper divisors (5534923).

71742773 is a wasteful number, since it uses less digits than its factorization.

71742773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100675.

The product of its digits is 57624, while the sum is 38.

The square root of 71742773 is about 8470.1105659844. The cubic root of 71742773 is about 415.5207533452.

The spelling of 71742773 in words is "seventy-one million, seven hundred forty-two thousand, seven hundred seventy-three".