78924785 has 8 divisors (see below), whose sum is σ = 95456256. Its totient is φ = 62642160.

The previous prime is 78924773. The next prime is 78924787. The reversal of 78924785 is 58742987.

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

It is not a de Polignac number, because 78924785 - 2⁶ = 78924721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78924787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61511 + ... + 62780.

It is an arithmetic number, because the mean of its divisors is an integer number (11932032).

Almost surely, 2^78924785 is an apocalyptic number.

It is an amenable number.

78924785 is a deficient number, since it is larger than the sum of its proper divisors (16531471).

78924785 is a wasteful number, since it uses less digits than its factorization.

78924785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124423.

The product of its digits is 1128960, while the sum is 50.

The square root of 78924785 is about 8883.9622353992. The cubic root of 78924785 is about 428.9478241198.

The spelling of 78924785 in words is "seventy-eight million, nine hundred twenty-four thousand, seven hundred eighty-five".