68562021 has 8 divisors (see below), whose sum is σ = 99726624. Its totient is φ = 41552720.

The previous prime is 68562007. The next prime is 68562029. The reversal of 68562021 is 12026586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68562021 - 2⁵ = 68561989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68562021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68562029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1038786 + ... + 1038851.

It is an arithmetic number, because the mean of its divisors is an integer number (12465828).

Almost surely, 2^68562021 is an apocalyptic number.

It is an amenable number.

68562021 is a deficient number, since it is larger than the sum of its proper divisors (31164603).

68562021 is a wasteful number, since it uses less digits than its factorization.

68562021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077651.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 68562021 is about 8280.2186565332. The cubic root of 68562021 is about 409.2869243228.

The spelling of 68562021 in words is "sixty-eight million, five hundred sixty-two thousand, twenty-one".