67798992 has 80 divisors (see below), whose sum is σ = 195255360. Its totient is φ = 20146176.

The previous prime is 67798979. The next prime is 67798993. The reversal of 67798992 is 29989776.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67798993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13318 + ... + 17690.

It is an arithmetic number, because the mean of its divisors is an integer number (2440692).

Almost surely, 2^67798992 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 67798992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97627680).

67798992 is an abundant number, since it is smaller than the sum of its proper divisors (127456368).

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

67798992 is a wasteful number, since it uses less digits than its factorization.

67798992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420 (or 4414 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 57.

The square root of 67798992 is about 8234.0143308109. The cubic root of 67798992 is about 407.7629341765.

The spelling of 67798992 in words is "sixty-seven million, seven hundred ninety-eight thousand, nine hundred ninety-two".