78873741 has 6 divisors (see below), whose sum is σ = 113928750. Its totient is φ = 52582488.

The previous prime is 78873719. The next prime is 78873779. The reversal of 78873741 is 14737887.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45765225 + 33108516 = 6765^2 + 5754^2 .

It is not a de Polignac number, because 78873741 - 2¹¹ = 78871693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78873341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4381866 + ... + 4381883.

It is an arithmetic number, because the mean of its divisors is an integer number (18988125).

Almost surely, 2^78873741 is an apocalyptic number.

It is an amenable number.

78873741 is a deficient number, since it is larger than the sum of its proper divisors (35055009).

78873741 is a wasteful number, since it uses less digits than its factorization.

78873741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8763755 (or 8763752 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 78873741 is about 8881.0889535011. The cubic root of 78873741 is about 428.8553312710.

It can be divided in two parts, 7887 and 3741, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 78873741 in words is "seventy-eight million, eight hundred seventy-three thousand, seven hundred forty-one".