69678856 has 16 divisors (see below), whose sum is σ = 140697900. Its totient is φ = 32159424.

The previous prime is 69678853. The next prime is 69678857. The reversal of 69678856 is 65887696.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68392900 + 1285956 = 8270^2 + 1134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69678797 and 69678806.

It is not an unprimeable number, because it can be changed into a prime (69678853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334891 + ... + 335098.

Almost surely, 2^69678856 is an apocalyptic number.

It is an amenable number.

69678856 is an abundant number, since it is smaller than the sum of its proper divisors (71019044).

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

69678856 is a wasteful number, since it uses less digits than its factorization.

69678856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670008 (or 670004 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The square root of 69678856 is about 8347.3861777205. The cubic root of 69678856 is about 411.4973132035.

The spelling of 69678856 in words is "sixty-nine million, six hundred seventy-eight thousand, eight hundred fifty-six".