778326069 has 16 divisors (see below), whose sum is σ = 1068111360. Its totient is φ = 503931120.

The previous prime is 778326067. The next prime is 778326071. The reversal of 778326069 is 960623877.

It is an interprime number because it is at equal distance from previous prime (778326067) and next prime (778326071).

It is not a de Polignac number, because 778326069 - 2¹ = 778326067 is a prime.

It is a super-2 number, since 2×778326069² = 1211582939369985522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778326061) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12999 + ... + 41540.

It is an arithmetic number, because the mean of its divisors is an integer number (66756960).

Almost surely, 2^778326069 is an apocalyptic number.

It is an amenable number.

778326069 is a deficient number, since it is larger than the sum of its proper divisors (289785291).

778326069 is a wasteful number, since it uses less digits than its factorization.

778326069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54680.

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

The square root of 778326069 is about 27898.4958196674. The cubic root of 778326069 is about 919.8574404973.

The spelling of 778326069 in words is "seven hundred seventy-eight million, three hundred twenty-six thousand, sixty-nine".