67677407 has 4 divisors (see below), whose sum is σ = 77345616. Its totient is φ = 58009200.

The previous prime is 67677397. The next prime is 67677419. The reversal of 67677407 is 70477676.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67677407 - 2¹⁰ = 67676383 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 (67677457) 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 in 3 ways as a sum of consecutive naturals, for example, 4834094 + ... + 4834107.

It is an arithmetic number, because the mean of its divisors is an integer number (19336404).

Almost surely, 2^67677407 is an apocalyptic number.

67677407 is a deficient number, since it is larger than the sum of its proper divisors (9668209).

67677407 is an equidigital number, since it uses as much as digits as its factorization.

67677407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9668208.

The product of its (nonzero) digits is 345744, while the sum is 44.

The square root of 67677407 is about 8226.6279240039. The cubic root of 67677407 is about 407.5190390944.

The spelling of 67677407 in words is "sixty-seven million, six hundred seventy-seven thousand, four hundred seven".