67828855 has 4 divisors (see below), whose sum is σ = 81394632. Its totient is φ = 54263080.

The previous prime is 67828853. The next prime is 67828903. The reversal of 67828855 is 55882876.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 67828855 - 2¹ = 67828853 is a prime.

It is a super-2 number, since 2×67828855² = 9201507141222050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67828799 and 67828808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67828853) 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, 6782881 + ... + 6782890.

It is an arithmetic number, because the mean of its divisors is an integer number (20348658).

Almost surely, 2^67828855 is an apocalyptic number.

67828855 is a deficient number, since it is larger than the sum of its proper divisors (13565777).

67828855 is a wasteful number, since it uses less digits than its factorization.

67828855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13565776.

The product of its digits is 1075200, while the sum is 49.

The square root of 67828855 is about 8235.8275236918. The cubic root of 67828855 is about 407.8227936559.

The spelling of 67828855 in words is "sixty-seven million, eight hundred twenty-eight thousand, eight hundred fifty-five".