67594421 has 2 divisors, whose sum is σ = 67594422. Its totient is φ = 67594420.

The previous prime is 67594403. The next prime is 67594433. The reversal of 67594421 is 12449576.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43692100 + 23902321 = 6610^2 + 4889^2 .

It is a cyclic number.

It is not a de Polignac number, because 67594421 - 2¹⁴ = 67578037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67594441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33797210 + 33797211.

It is an arithmetic number, because the mean of its divisors is an integer number (33797211).

Almost surely, 2^67594421 is an apocalyptic number.

It is an amenable number.

67594421 is a deficient number, since it is larger than the sum of its proper divisors (1).

67594421 is an equidigital number, since it uses as much as digits as its factorization.

67594421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 67594421 is about 8221.5826335323. The cubic root of 67594421 is about 407.3524044246.

The spelling of 67594421 in words is "sixty-seven million, five hundred ninety-four thousand, four hundred twenty-one".