68114640 has 80 divisors (see below), whose sum is σ = 230360256. Its totient is φ = 16512000.

The previous prime is 68114617. The next prime is 68114659. The reversal of 68114640 is 4641186.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 68114598 and 68114607.

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 15 ways as a sum of consecutive naturals, for example, 10261 + ... + 15540.

Almost surely, 2^68114640 is an apocalyptic number.

68114640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68114640 is an abundant number, since it is smaller than the sum of its proper divisors (162245616).

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

68114640 is a wasteful number, since it uses less digits than its factorization.

68114640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25828 (or 25822 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 68114640 is about 8253.1593950438. The cubic root of 68114640 is about 408.3947544239.

It can be divided in two parts, 681146 and 40, that added together give a palindrome (681186).

The spelling of 68114640 in words is "sixty-eight million, one hundred fourteen thousand, six hundred forty".