67421701 has 2 divisors, whose sum is σ = 67421702. Its totient is φ = 67421700.

The previous prime is 67421657. The next prime is 67421707. The reversal of 67421701 is 10712476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66096900 + 1324801 = 8130^2 + 1151^2 .

It is a cyclic number.

It is not a de Polignac number, because 67421701 - 2⁷ = 67421573 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67421701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67421707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33710850 + 33710851.

It is an arithmetic number, because the mean of its divisors is an integer number (33710851).

Almost surely, 2^67421701 is an apocalyptic number.

It is an amenable number.

67421701 is a deficient number, since it is larger than the sum of its proper divisors (1).

67421701 is an equidigital number, since it uses as much as digits as its factorization.

67421701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 67421701 is about 8211.0718545145. The cubic root of 67421701 is about 407.0051473651.

The spelling of 67421701 in words is "sixty-seven million, four hundred twenty-one thousand, seven hundred one".