68621967 has 6 divisors (see below), whose sum is σ = 99120632. Its totient is φ = 45747972.

The previous prime is 68621963. The next prime is 68622049. The reversal of 68621967 is 76912686.

It is not a de Polignac number, because 68621967 - 2² = 68621963 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 (68621963) 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 5 ways as a sum of consecutive naturals, for example, 3812323 + ... + 3812340.

Almost surely, 2^68621967 is an apocalyptic number.

68621967 is a deficient number, since it is larger than the sum of its proper divisors (30498665).

68621967 is a wasteful number, since it uses less digits than its factorization.

68621967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624669 (or 7624666 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 68621967 is about 8283.8376975892. The cubic root of 68621967 is about 409.4061738551.

The spelling of 68621967 in words is "sixty-eight million, six hundred twenty-one thousand, nine hundred sixty-seven".