78983755 has 4 divisors (see below), whose sum is σ = 94780512. Its totient is φ = 63187000.

The previous prime is 78983731. The next prime is 78983777. The reversal of 78983755 is 55738987.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 78983755 - 2¹⁵ = 78950987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7898371 + ... + 7898380.

It is an arithmetic number, because the mean of its divisors is an integer number (23695128).

Almost surely, 2^78983755 is an apocalyptic number.

78983755 is a deficient number, since it is larger than the sum of its proper divisors (15796757).

78983755 is a wasteful number, since it uses less digits than its factorization.

78983755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15796756.

The product of its digits is 2116800, while the sum is 52.

The square root of 78983755 is about 8887.2805176837. The cubic root of 78983755 is about 429.0546294194.

The spelling of 78983755 in words is "seventy-eight million, nine hundred eighty-three thousand, seven hundred fifty-five".