68421701 has 4 divisors (see below), whose sum is σ = 70781100. Its totient is φ = 66062304.

The previous prime is 68421671. The next prime is 68421713. The reversal of 68421701 is 10712486.

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 31528225 + 36893476 = 5615^2 + 6074^2 .

It is a cyclic number.

It is not a de Polignac number, because 68421701 - 2¹⁴ = 68405317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2359369 = 68421701 / (6 + 8 + 4 + 2 + 1 + 7 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68421721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179656 + ... + 1179713.

It is an arithmetic number, because the mean of its divisors is an integer number (17695275).

Almost surely, 2^68421701 is an apocalyptic number.

It is an amenable number.

68421701 is a deficient number, since it is larger than the sum of its proper divisors (2359399).

68421701 is a wasteful number, since it uses less digits than its factorization.

68421701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359398.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 68421701 is about 8271.7411105522. The cubic root of 68421701 is about 409.0075161568.

The spelling of 68421701 in words is "sixty-eight million, four hundred twenty-one thousand, seven hundred one".