67420727 has 4 divisors (see below), whose sum is σ = 73549896. Its totient is φ = 61291560.

The previous prime is 67420673. The next prime is 67420741. The reversal of 67420727 is 72702476.

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

It is not a de Polignac number, because 67420727 - 2⁶ = 67420663 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 (67420747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3064568 + ... + 3064589.

It is an arithmetic number, because the mean of its divisors is an integer number (18387474).

Almost surely, 2^67420727 is an apocalyptic number.

67420727 is a deficient number, since it is larger than the sum of its proper divisors (6129169).

67420727 is a wasteful number, since it uses less digits than its factorization.

67420727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6129168.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 67420727 is about 8211.0125441385. The cubic root of 67420727 is about 407.0031874377.

The spelling of 67420727 in words is "sixty-seven million, four hundred twenty thousand, seven hundred twenty-seven".