67228907 has 4 divisors (see below), whose sum is σ = 68368440. Its totient is φ = 66089376.

The previous prime is 67228901. The next prime is 67228913. The reversal of 67228907 is 70982276.

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

It is an interprime number because it is at equal distance from previous prime (67228901) and next prime (67228913).

It is a cyclic number.

It is not a de Polignac number, because 67228907 - 2⁴ = 67228891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67228901) 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, 569678 + ... + 569795.

It is an arithmetic number, because the mean of its divisors is an integer number (17092110).

Almost surely, 2^67228907 is an apocalyptic number.

67228907 is a deficient number, since it is larger than the sum of its proper divisors (1139533).

67228907 is a wasteful number, since it uses less digits than its factorization.

67228907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139532.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 67228907 is about 8199.3235696611. The cubic root of 67228907 is about 406.6168299434.

The spelling of 67228907 in words is "sixty-seven million, two hundred twenty-eight thousand, nine hundred seven".