78769623 has 8 divisors (see below), whose sum is σ = 105195136. Its totient is φ = 52428600.

The previous prime is 78769609. The next prime is 78769637. The reversal of 78769623 is 32696787.

It is an interprime number because it is at equal distance from previous prime (78769609) and next prime (78769637).

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

It is not a de Polignac number, because 78769623 - 2¹⁴ = 78753239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78769643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18913 + ... + 22698.

It is an arithmetic number, because the mean of its divisors is an integer number (13149392).

Almost surely, 2^78769623 is an apocalyptic number.

78769623 is a deficient number, since it is larger than the sum of its proper divisors (26425513).

78769623 is a wasteful number, since it uses less digits than its factorization.

78769623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42245.

The product of its digits is 762048, while the sum is 48.

The square root of 78769623 is about 8875.2252365785. The cubic root of 78769623 is about 428.6665433812. Note that the first 3 decimals are identical.

The spelling of 78769623 in words is "seventy-eight million, seven hundred sixty-nine thousand, six hundred twenty-three".