68046440 has 64 divisors (see below), whose sum is σ = 190892160. Its totient is φ = 21208320.

The previous prime is 68046431. The next prime is 68046449. The reversal of 68046440 is 4464086.

It is an interprime number because it is at equal distance from previous prime (68046431) and next prime (68046449).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68046397 and 68046406.

It is not an unprimeable number, because it can be changed into a prime (68046449) by changing a digit.

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, 7967 + ... + 14126.

It is an arithmetic number, because the mean of its divisors is an integer number (2982690).

Almost surely, 2^68046440 is an apocalyptic number.

It is an amenable number.

68046440 is an abundant number, since it is smaller than the sum of its proper divisors (122845720).

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

68046440 is a wasteful number, since it uses less digits than its factorization.

68046440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22122 (or 22118 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 68046440 is about 8249.0266092431. The cubic root of 68046440 is about 408.2584067252.

It can be divided in two parts, 68046 and 440, that added together give a palindrome (68486).

The spelling of 68046440 in words is "sixty-eight million, forty-six thousand, four hundred forty".