78769758 has 8 divisors (see below), whose sum is σ = 157539528. Its totient is φ = 26256584.

The previous prime is 78769741. The next prime is 78769759. The reversal of 78769758 is 85796787.

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

78769758 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78769698 and 78769707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78769759) 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, 6564141 + ... + 6564152.

It is an arithmetic number, because the mean of its divisors is an integer number (19692441).

Almost surely, 2^78769758 is an apocalyptic number.

78769758 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78769758 is a wasteful number, since it uses less digits than its factorization.

78769758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13128298.

The product of its digits is 5927040, while the sum is 57.

The square root of 78769758 is about 8875.2328420160. The cubic root of 78769758 is about 428.6667882724. Note that the first 3 decimals are identical.

The spelling of 78769758 in words is "seventy-eight million, seven hundred sixty-nine thousand, seven hundred fifty-eight".