67722541 has 2 divisors, whose sum is σ = 67722542. Its totient is φ = 67722540.

The previous prime is 67722533. The next prime is 67722559. The reversal of 67722541 is 14522776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47955625 + 19766916 = 6925^2 + 4446^2 .

It is a cyclic number.

It is not a de Polignac number, because 67722541 - 2³ = 67722533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67722497 and 67722506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67722521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33861270 + 33861271.

It is an arithmetic number, because the mean of its divisors is an integer number (33861271).

Almost surely, 2^67722541 is an apocalyptic number.

It is an amenable number.

67722541 is a deficient number, since it is larger than the sum of its proper divisors (1).

67722541 is an equidigital number, since it uses as much as digits as its factorization.

67722541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 67722541 is about 8229.3706320714. The cubic root of 67722541 is about 407.6096103199.

The spelling of 67722541 in words is "sixty-seven million, seven hundred twenty-two thousand, five hundred forty-one".