68420767 has 16 divisors (see below), whose sum is σ = 77898240. Its totient is φ = 59695488.

The previous prime is 68420761. The next prime is 68420857. The reversal of 68420767 is 76702486.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68420767 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 (68420761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12928 + ... + 17434.

It is an arithmetic number, because the mean of its divisors is an integer number (4868640).

Almost surely, 2^68420767 is an apocalyptic number.

68420767 is a deficient number, since it is larger than the sum of its proper divisors (9477473).

68420767 is a wasteful number, since it uses less digits than its factorization.

68420767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 68420767 is about 8271.6846530800. The cubic root of 68420767 is about 409.0056550769.

The spelling of 68420767 in words is "sixty-eight million, four hundred twenty thousand, seven hundred sixty-seven".