67424947 has 4 divisors (see below), whose sum is σ = 68530336. Its totient is φ = 66319560.

The previous prime is 67424927. The next prime is 67424963. The reversal of 67424947 is 74942476.

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 67424947 - 2²³ = 59036339 is a prime.

It is a super-2 number, since 2×67424947² = 9092246955905618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67424927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552603 + ... + 552724.

It is an arithmetic number, because the mean of its divisors is an integer number (17132584).

Almost surely, 2^67424947 is an apocalyptic number.

67424947 is a deficient number, since it is larger than the sum of its proper divisors (1105389).

67424947 is a wasteful number, since it uses less digits than its factorization.

67424947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105388.

The product of its digits is 338688, while the sum is 43.

The square root of 67424947 is about 8211.2695120791. The cubic root of 67424947 is about 407.0116789788.

The spelling of 67424947 in words is "sixty-seven million, four hundred twenty-four thousand, nine hundred forty-seven".