78984577 has 8 divisors (see below), whose sum is σ = 95019200. Its totient is φ = 64137744.

The previous prime is 78984557. The next prime is 78984637. The reversal of 78984577 is 77548987.

It is a happy number.

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 78984577 - 2⁷ = 78984449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78984557) 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, 296802 + ... + 297067.

It is an arithmetic number, because the mean of its divisors is an integer number (11877400).

Almost surely, 2^78984577 is an apocalyptic number.

It is an amenable number.

78984577 is a deficient number, since it is larger than the sum of its proper divisors (16034623).

78984577 is a wasteful number, since it uses less digits than its factorization.

78984577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593895.

The product of its digits is 3951360, while the sum is 55.

The square root of 78984577 is about 8887.3267634312. The cubic root of 78984577 is about 429.0561178339.

The spelling of 78984577 in words is "seventy-eight million, nine hundred eighty-four thousand, five hundred seventy-seven".