67621533 has 32 divisors (see below), whose sum is σ = 109512960. Its totient is φ = 36288000.

The previous prime is 67621523. The next prime is 67621537. The reversal of 67621533 is 33512676.

It is not a de Polignac number, because 67621533 - 2⁵ = 67621501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67621494 and 67621503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67621537) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 21033 + ... + 24033.

It is an arithmetic number, because the mean of its divisors is an integer number (3422280).

Almost surely, 2^67621533 is an apocalyptic number.

It is an amenable number.

67621533 is a deficient number, since it is larger than the sum of its proper divisors (41891427).

67621533 is a wasteful number, since it uses less digits than its factorization.

67621533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077.

The product of its digits is 22680, while the sum is 33.

The square root of 67621533 is about 8223.2312991913. The cubic root of 67621533 is about 407.4068599155.

The spelling of 67621533 in words is "sixty-seven million, six hundred twenty-one thousand, five hundred thirty-three".