67977541 has 2 divisors, whose sum is σ = 67977542. Its totient is φ = 67977540.

The previous prime is 67977491. The next prime is 67977583. The reversal of 67977541 is 14577976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34869025 + 33108516 = 5905^2 + 5754^2 .

It is a cyclic number.

It is not a de Polignac number, because 67977541 - 2¹⁷ = 67846469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67977491 and 67977500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67975541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33988770 + 33988771.

It is an arithmetic number, because the mean of its divisors is an integer number (33988771).

Almost surely, 2^67977541 is an apocalyptic number.

It is an amenable number.

67977541 is a deficient number, since it is larger than the sum of its proper divisors (1).

67977541 is an equidigital number, since it uses as much as digits as its factorization.

67977541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 46.

The square root of 67977541 is about 8244.8493618744. The cubic root of 67977541 is about 408.1205690221.

The spelling of 67977541 in words is "sixty-seven million, nine hundred seventy-seven thousand, five hundred forty-one".