68674919481 has 27 divisors (see below), whose sum is σ = 115401799461. Its totient is φ = 39239666424.

The previous prime is 68674919471. The next prime is 68674919543. The reversal of 68674919481 is 18491947686.

The square root of 68674919481 is 262059.

It is a perfect power (a square), and thus also a powerful number.

68674919481 is a `hidden beast` number, since 6 + 8 + 67 + 4 + 91 + 9 + 481 = 666.

It is not a de Polignac number, because 68674919481 - 2⁹ = 68674918969 is a prime.

It is a super-2 number, since 2×68674919481² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (68674919471) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5497000 + ... + 5509478.

Almost surely, 2^68674919481 is an apocalyptic number.

68674919481 is the 262059-th square number.

68674919481 is the 131030-th centered octagonal number.

It is an amenable number.

68674919481 is a deficient number, since it is larger than the sum of its proper divisors (46726879980).

68674919481 is an frugal number, since it uses more digits than its factorization.

68674919481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24978 (or 12489 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 68674919481 in words is "sixty-eight billion, six hundred seventy-four million, nine hundred nineteen thousand, four hundred eighty-one".