67691630 has 16 divisors (see below), whose sum is σ = 122777424. Its totient is φ = 26869440.

The previous prime is 67691629. The next prime is 67691651. The reversal of 67691630 is 3619676.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24527 + ... + 27146.

It is an arithmetic number, because the mean of its divisors is an integer number (7673589).

Almost surely, 2^67691630 is an apocalyptic number.

67691630 is a deficient number, since it is larger than the sum of its proper divisors (55085794).

67691630 is a wasteful number, since it uses less digits than its factorization.

67691630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51811.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 67691630 is about 8227.4923275564. The cubic root of 67691630 is about 407.5475849935.

The spelling of 67691630 in words is "sixty-seven million, six hundred ninety-one thousand, six hundred thirty".