68909755 has 24 divisors (see below), whose sum is σ = 89702208. Its totient is φ = 50642688.

The previous prime is 68909749. The next prime is 68909759. The reversal of 68909755 is 55790986.

It is not a de Polignac number, because 68909755 - 2³ = 68909747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68909699 and 68909708.

It is not an unprimeable number, because it can be changed into a prime (68909759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187582 + ... + 187948.

It is an arithmetic number, because the mean of its divisors is an integer number (3737592).

Almost surely, 2^68909755 is an apocalyptic number.

68909755 is a deficient number, since it is larger than the sum of its proper divisors (20792453).

68909755 is a wasteful number, since it uses less digits than its factorization.

68909755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 68909755 is about 8301.1899749373. The cubic root of 68909755 is about 409.9777005520.

The spelling of 68909755 in words is "sixty-eight million, nine hundred nine thousand, seven hundred fifty-five".