78496765 has 16 divisors (see below), whose sum is σ = 98466480. Its totient is φ = 59996160.

The previous prime is 78496757. The next prime is 78496777. The reversal of 78496765 is 56769487.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2493241 + 76003524 = 1579^2 + 8718^2 .

It is not a de Polignac number, because 78496765 - 2³ = 78496757 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11275 + ... + 16855.

It is an arithmetic number, because the mean of its divisors is an integer number (6154155).

Almost surely, 2^78496765 is an apocalyptic number.

It is an amenable number.

78496765 is a deficient number, since it is larger than the sum of its proper divisors (19969715).

78496765 is a wasteful number, since it uses less digits than its factorization.

78496765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5712.

The product of its digits is 2540160, while the sum is 52.

The square root of 78496765 is about 8859.8400098422. The cubic root of 78496765 is about 428.1710037411.

The spelling of 78496765 in words is "seventy-eight million, four hundred ninety-six thousand, seven hundred sixty-five".