67430906 has 4 divisors (see below), whose sum is σ = 101146362. Its totient is φ = 33715452.

The previous prime is 67430897. The next prime is 67430929. The reversal of 67430906 is 60903476.

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

It can be written as a sum of positive squares in only one way, i.e., 45010681 + 22420225 = 6709^2 + 4735^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16857725 + ... + 16857728.

Almost surely, 2^67430906 is an apocalyptic number.

67430906 is a deficient number, since it is larger than the sum of its proper divisors (33715456).

67430906 is a wasteful number, since it uses less digits than its factorization.

67430906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33715455.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 67430906 is about 8211.6323590380. The cubic root of 67430906 is about 407.0236691558.

The spelling of 67430906 in words is "sixty-seven million, four hundred thirty thousand, nine hundred six".