67124731 has 2 divisors, whose sum is σ = 67124732. Its totient is φ = 67124730.

The previous prime is 67124723. The next prime is 67124747. The reversal of 67124731 is 13742176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67124731 - 2³ = 67124723 is a prime.

It is a super-2 number, since 2×67124731² = 9011459023644722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67124693 and 67124702.

It is not a weakly prime, because it can be changed into another prime (67724731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33562365 + 33562366.

It is an arithmetic number, because the mean of its divisors is an integer number (33562366).

Almost surely, 2^67124731 is an apocalyptic number.

67124731 is a deficient number, since it is larger than the sum of its proper divisors (1).

67124731 is an equidigital number, since it uses as much as digits as its factorization.

67124731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 67124731 is about 8192.9683875870. The cubic root of 67124731 is about 406.4066940786.

The spelling of 67124731 in words is "sixty-seven million, one hundred twenty-four thousand, seven hundred thirty-one".