67421629 has 8 divisors (see below), whose sum is σ = 73618272. Its totient is φ = 61236240.

The previous prime is 67421611. The next prime is 67421657. The reversal of 67421629 is 92612476.

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

It is a cyclic number.

It is not a de Polignac number, because 67421629 - 2¹⁵ = 67388861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67421429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14247 + ... + 18379.

It is an arithmetic number, because the mean of its divisors is an integer number (9202284).

Almost surely, 2^67421629 is an apocalyptic number.

It is an amenable number.

67421629 is a deficient number, since it is larger than the sum of its proper divisors (6196643).

67421629 is a wasteful number, since it uses less digits than its factorization.

67421629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627.

The product of its digits is 36288, while the sum is 37.

The square root of 67421629 is about 8211.0674701892. The cubic root of 67421629 is about 407.0050024841.

The spelling of 67421629 in words is "sixty-seven million, four hundred twenty-one thousand, six hundred twenty-nine".