68647744 has 28 divisors (see below), whose sum is σ = 148608288. Its totient is φ = 31203200.

The previous prime is 68647721. The next prime is 68647757. The reversal of 68647744 is 44774686.

It is a junction number, because it is equal to n+sod(n) for n = 68647694 and 68647703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48052 + ... + 49459.

Almost surely, 2^68647744 is an apocalyptic number.

68647744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68647744 is an abundant number, since it is smaller than the sum of its proper divisors (79960544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68647744 is a wasteful number, since it uses less digits than its factorization.

68647744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97534 (or 97524 counting only the distinct ones).

The product of its digits is 903168, while the sum is 46.

The square root of 68647744 is about 8285.3934125061. The cubic root of 68647744 is about 409.4574302398.

The spelling of 68647744 in words is "sixty-eight million, six hundred forty-seven thousand, seven hundred forty-four".