66667038 has 8 divisors (see below), whose sum is σ = 133334088. Its totient is φ = 22222344.

The previous prime is 66667037. The next prime is 66667039. The reversal of 66667038 is 83076666.

It is an interprime number because it is at equal distance from previous prime (66667037) and next prime (66667039).

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

66667038 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66667037) 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, 5555581 + ... + 5555592.

It is an arithmetic number, because the mean of its divisors is an integer number (16666761).

Almost surely, 2^66667038 is an apocalyptic number.

66667038 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66667038 is a wasteful number, since it uses less digits than its factorization.

66667038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111178.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 66667038 is about 8164.9885486754. The cubic root of 66667038 is about 405.4808858783.

The spelling of 66667038 in words is "sixty-six million, six hundred sixty-seven thousand, thirty-eight".