78804743 has 4 divisors (see below), whose sum is σ = 78912120. Its totient is φ = 78697368.

The previous prime is 78804727. The next prime is 78804749. The reversal of 78804743 is 34740887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34740887 = 809 ⋅42943.

It is a cyclic number.

It is not a de Polignac number, because 78804743 - 2⁴ = 78804727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78804743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78804749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52580 + ... + 54057.

It is an arithmetic number, because the mean of its divisors is an integer number (19728030).

Almost surely, 2^78804743 is an apocalyptic number.

78804743 is a deficient number, since it is larger than the sum of its proper divisors (107377).

78804743 is a wasteful number, since it uses less digits than its factorization.

78804743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107376.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 78804743 is about 8877.2035574273. The cubic root of 78804743 is about 428.7302419305.

The spelling of 78804743 in words is "seventy-eight million, eight hundred four thousand, seven hundred forty-three".