68949440 has 56 divisors (see below), whose sum is σ = 187647072. Its totient is φ = 23639040.

The previous prime is 68949403. The next prime is 68949479. The reversal of 68949440 is 4494986.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 68949391 and 68949400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13151 + ... + 17630.

Almost surely, 2^68949440 is an apocalyptic number.

It is an amenable number.

68949440 is an abundant number, since it is smaller than the sum of its proper divisors (118697632).

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

68949440 is a wasteful number, since it uses less digits than its factorization.

68949440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30805 (or 30795 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 68949440 is about 8303.5799508405. The cubic root of 68949440 is about 410.0563872477.

The spelling of 68949440 in words is "sixty-eight million, nine hundred forty-nine thousand, four hundred forty".