68839051 has 4 divisors (see below), whose sum is σ = 68863600. Its totient is φ = 68814504.

The previous prime is 68839039. The next prime is 68839061. The reversal of 68839051 is 15093886.

It is a happy number.

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 68839051 - 2⁷ = 68838923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68838995 and 68839013.

It is not an unprimeable number, because it can be changed into a prime (68839021) 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, 7431 + ... + 13888.

It is an arithmetic number, because the mean of its divisors is an integer number (17215900).

Almost surely, 2^68839051 is an apocalyptic number.

68839051 is the 3711-st centered decagonal number.

68839051 is a deficient number, since it is larger than the sum of its proper divisors (24549).

68839051 is a wasteful number, since it uses less digits than its factorization.

68839051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24548.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 68839051 is about 8296.9302154472. The cubic root of 68839051 is about 409.8374350558.

The spelling of 68839051 in words is "sixty-eight million, eight hundred thirty-nine thousand, fifty-one".