78684741 has 12 divisors (see below), whose sum is σ = 114410400. Its totient is φ = 52108200.

The previous prime is 78684737. The next prime is 78684761. The reversal of 78684741 is 14748687.

It is not a de Polignac number, because 78684741 - 2² = 78684737 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 (78684731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27591 + ... + 30308.

It is an arithmetic number, because the mean of its divisors is an integer number (9534200).

Almost surely, 2^78684741 is an apocalyptic number.

It is an amenable number.

78684741 is a deficient number, since it is larger than the sum of its proper divisors (35725659).

78684741 is a wasteful number, since it uses less digits than its factorization.

78684741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58056 (or 58053 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 78684741 is about 8870.4419844786. The cubic root of 78684741 is about 428.5125112817.

The spelling of 78684741 in words is "seventy-eight million, six hundred eighty-four thousand, seven hundred forty-one".