67648629 has 4 divisors (see below), whose sum is σ = 90198176. Its totient is φ = 45099084.

The previous prime is 67648621. The next prime is 67648639. The reversal of 67648629 is 92684676.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 67648629 - 2³ = 67648621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67648621) 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, 11274769 + ... + 11274774.

It is an arithmetic number, because the mean of its divisors is an integer number (22549544).

Almost surely, 2^67648629 is an apocalyptic number.

It is an amenable number.

67648629 is a deficient number, since it is larger than the sum of its proper divisors (22549547).

67648629 is a wasteful number, since it uses less digits than its factorization.

67648629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22549546.

The product of its digits is 870912, while the sum is 48.

The square root of 67648629 is about 8224.8786617190. The cubic root of 67648629 is about 407.4612687291.

The spelling of 67648629 in words is "sixty-seven million, six hundred forty-eight thousand, six hundred twenty-nine".