67427057 has 2 divisors, whose sum is σ = 67427058. Its totient is φ = 67427056.

The previous prime is 67427047. The next prime is 67427071. The reversal of 67427057 is 75072476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66650896 + 776161 = 8164^2 + 881^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67427057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67427057.

It is not a weakly prime, because it can be changed into another prime (67427027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33713528 + 33713529.

It is an arithmetic number, because the mean of its divisors is an integer number (33713529).

Almost surely, 2^67427057 is an apocalyptic number.

It is an amenable number.

67427057 is a deficient number, since it is larger than the sum of its proper divisors (1).

67427057 is an equidigital number, since it uses as much as digits as its factorization.

67427057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 67427057 is about 8211.3979930338. The cubic root of 67427057 is about 407.0159246164.

The spelling of 67427057 in words is "sixty-seven million, four hundred twenty-seven thousand, fifty-seven".