68477312 has 32 divisors (see below), whose sum is σ = 137975400. Its totient is φ = 33848320.

The previous prime is 68477303. The next prime is 68477317. The reversal of 68477312 is 21377486.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68477317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8387 + ... + 14397.

Almost surely, 2^68477312 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 68477312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68987700).

68477312 is an abundant number, since it is smaller than the sum of its proper divisors (69498088).

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

68477312 is an equidigital number, since it uses as much as digits as its factorization.

68477312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114 (or 6102 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 68477312 is about 8275.1019329069. The cubic root of 68477312 is about 409.1182956181.

The spelling of 68477312 in words is "sixty-eight million, four hundred seventy-seven thousand, three hundred twelve".