68506885 has 4 divisors (see below), whose sum is σ = 82208268. Its totient is φ = 54805504.

The previous prime is 68506877. The next prime is 68506891. The reversal of 68506885 is 58860586.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9247681 + 59259204 = 3041^2 + 7698^2 .

It is a cyclic number.

It is not a de Polignac number, because 68506885 - 2³ = 68506877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6850684 + ... + 6850693.

It is an arithmetic number, because the mean of its divisors is an integer number (20552067).

Almost surely, 2^68506885 is an apocalyptic number.

It is an amenable number.

68506885 is a deficient number, since it is larger than the sum of its proper divisors (13701383).

68506885 is a wasteful number, since it uses less digits than its factorization.

68506885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13701382.

The product of its (nonzero) digits is 460800, while the sum is 46.

The square root of 68506885 is about 8276.8886062336. Note that the first 3 decimals coincide. The cubic root of 68506885 is about 409.1771818571.

The spelling of 68506885 in words is "sixty-eight million, five hundred six thousand, eight hundred eighty-five".