67672777 has 2 divisors, whose sum is σ = 67672778. Its totient is φ = 67672776.

The previous prime is 67672771. The next prime is 67672789. The reversal of 67672777 is 77727676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54597321 + 13075456 = 7389^2 + 3616^2 .

It is a cyclic number.

It is not a de Polignac number, because 67672777 - 2¹⁵ = 67640009 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 67672777.

It is not a weakly prime, because it can be changed into another prime (67672771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33836388 + 33836389.

It is an arithmetic number, because the mean of its divisors is an integer number (33836389).

Almost surely, 2^67672777 is an apocalyptic number.

It is an amenable number.

67672777 is a deficient number, since it is larger than the sum of its proper divisors (1).

67672777 is an equidigital number, since it uses as much as digits as its factorization.

67672777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1210104, while the sum is 49.

The square root of 67672777 is about 8226.3465159207. The cubic root of 67672777 is about 407.5097457114.

The spelling of 67672777 in words is "sixty-seven million, six hundred seventy-two thousand, seven hundred seventy-seven".