68855069 has 4 divisors (see below), whose sum is σ = 72479040. Its totient is φ = 65231100.

The previous prime is 68855063. The next prime is 68855071. The reversal of 68855069 is 96055886.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68855069 - 2¹² = 68850973 is a prime.

It is a super-2 number, since 2×68855069² = 9482041053989522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68855063) 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, 1811957 + ... + 1811994.

It is an arithmetic number, because the mean of its divisors is an integer number (18119760).

Almost surely, 2^68855069 is an apocalyptic number.

It is an amenable number.

68855069 is a deficient number, since it is larger than the sum of its proper divisors (3623971).

68855069 is a wasteful number, since it uses less digits than its factorization.

68855069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623970.

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 68855069 is about 8297.8954560780. The cubic root of 68855069 is about 409.8692206331.

The spelling of 68855069 in words is "sixty-eight million, eight hundred fifty-five thousand, sixty-nine".