68605051 has 4 divisors (see below), whose sum is σ = 68950000. Its totient is φ = 68260104.

The previous prime is 68605049. The next prime is 68605087. The reversal of 68605051 is 15050686.

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

It is a cyclic number.

It is not a de Polignac number, because 68605051 - 2¹ = 68605049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68605001) 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, 172176 + ... + 172573.

It is an arithmetic number, because the mean of its divisors is an integer number (17237500).

Almost surely, 2^68605051 is an apocalyptic number.

68605051 is a deficient number, since it is larger than the sum of its proper divisors (344949).

68605051 is a wasteful number, since it uses less digits than its factorization.

68605051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344948.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 68605051 is about 8282.8166103084. The cubic root of 68605051 is about 409.3725301873.

It can be divided in two parts, 6860 and 5051, that added together give a palindrome (11911).

The spelling of 68605051 in words is "sixty-eight million, six hundred five thousand, fifty-one".