67920007 has 2 divisors, whose sum is σ = 67920008. Its totient is φ = 67920006.

The previous prime is 67919953. The next prime is 67920019. The reversal of 67920007 is 70002976.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67920007 is a prime.

It is a super-2 number, since 2×67920007² = 9226254701760098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67920077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33960003 + 33960004.

It is an arithmetic number, because the mean of its divisors is an integer number (33960004).

Almost surely, 2^67920007 is an apocalyptic number.

67920007 is a deficient number, since it is larger than the sum of its proper divisors (1).

67920007 is an equidigital number, since it uses as much as digits as its factorization.

67920007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 67920007 is about 8241.3595359018. The cubic root of 67920007 is about 408.0053964908.

The spelling of 67920007 in words is "sixty-seven million, nine hundred twenty thousand, seven".