67830457 has 2 divisors, whose sum is σ = 67830458. Its totient is φ = 67830456.

The previous prime is 67830421. The next prime is 67830461. The reversal of 67830457 is 75403876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47073321 + 20757136 = 6861^2 + 4556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67830457 is a prime.

It is equal to p_3997903 and since 67830457 and 3997903 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (67830467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33915228 + 33915229.

It is an arithmetic number, because the mean of its divisors is an integer number (33915229).

Almost surely, 2^67830457 is an apocalyptic number.

It is an amenable number.

67830457 is a deficient number, since it is larger than the sum of its proper divisors (1).

67830457 is an equidigital number, since it uses as much as digits as its factorization.

67830457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 67830457 is about 8235.9247811038. The cubic root of 67830457 is about 407.8260043198.

The spelling of 67830457 in words is "sixty-seven million, eight hundred thirty thousand, four hundred fifty-seven".