67666460767 has 8 divisors (see below), whose sum is σ = 69852903552. Its totient is φ = 65480246400.

The previous prime is 67666460761. The next prime is 67666460773. The reversal of 67666460767 is 76706466676.

It is a happy number.

67666460767 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (67666460761) and next prime (67666460773).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67666460767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67666460761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707763 + ... + 797659.

It is an arithmetic number, because the mean of its divisors is an integer number (8731612944).

Almost surely, 2^67666460767 is an apocalyptic number.

67666460767 is a deficient number, since it is larger than the sum of its proper divisors (2186442785).

67666460767 is a wasteful number, since it uses less digits than its factorization.

67666460767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114209.

The product of its (nonzero) digits is 64012032, while the sum is 61.

The spelling of 67666460767 in words is "sixty-seven billion, six hundred sixty-six million, four hundred sixty thousand, seven hundred sixty-seven".