68437788 has 36 divisors (see below), whose sum is σ = 166948488. Its totient is φ = 21818720.

The previous prime is 68437777. The next prime is 68437799. The reversal of 68437788 is 88773486.

It is an interprime number because it is at equal distance from previous prime (68437777) and next prime (68437799).

It is a self number, because there is not a number n which added to its sum of digits gives 68437788.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 958 + ... + 11738.

It is an arithmetic number, because the mean of its divisors is an integer number (4637458).

Almost surely, 2^68437788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68437788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83474244).

68437788 is an abundant number, since it is smaller than the sum of its proper divisors (98510700).

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

68437788 is a wasteful number, since it uses less digits than its factorization.

68437788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10834 (or 10809 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 68437788 is about 8272.7134605279. The cubic root of 68437788 is about 409.0395683090.

The spelling of 68437788 in words is "sixty-eight million, four hundred thirty-seven thousand, seven hundred eighty-eight".