67540751 has 2 divisors, whose sum is σ = 67540752. Its totient is φ = 67540750.

The previous prime is 67540747. The next prime is 67540769. The reversal of 67540751 is 15704576.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67540751 - 2² = 67540747 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67540721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33770375 + 33770376.

It is an arithmetic number, because the mean of its divisors is an integer number (33770376).

Almost surely, 2^67540751 is an apocalyptic number.

67540751 is a deficient number, since it is larger than the sum of its proper divisors (1).

67540751 is an equidigital number, since it uses as much as digits as its factorization.

67540751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 67540751 is about 8218.3180152632. The cubic root of 67540751 is about 407.2445632149.

The spelling of 67540751 in words is "sixty-seven million, five hundred forty thousand, seven hundred fifty-one".