67428011 has 4 divisors (see below), whose sum is σ = 77060592. Its totient is φ = 57795432.

The previous prime is 67427989. The next prime is 67428041. The reversal of 67428011 is 11082476.

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 67428011 - 2²⁶ = 319147 is a prime.

It is a super-2 number, since 2×67428011² = 9093073334832242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67428041) 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, 4816280 + ... + 4816293.

It is an arithmetic number, because the mean of its divisors is an integer number (19265148).

Almost surely, 2^67428011 is an apocalyptic number.

67428011 is a deficient number, since it is larger than the sum of its proper divisors (9632581).

67428011 is an equidigital number, since it uses as much as digits as its factorization.

67428011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9632580.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 67428011 is about 8211.4560828150. The cubic root of 67428011 is about 407.0178441790.

The spelling of 67428011 in words is "sixty-seven million, four hundred twenty-eight thousand, eleven".