68378004 has 36 divisors (see below), whose sum is σ = 173493684. Its totient is φ = 22707072.

The previous prime is 68377993. The next prime is 68378021. The reversal of 68378004 is 40087386.

It can be written as a sum of positive squares in 2 ways, for example, as 4410000 + 63968004 = 2100^2 + 7998^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 68378004.

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, 6544 + ... + 13400.

It is an arithmetic number, because the mean of its divisors is an integer number (4819269).

Almost surely, 2^68378004 is an apocalyptic number.

It is an amenable number.

68378004 is an abundant number, since it is smaller than the sum of its proper divisors (105115680).

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

68378004 is a wasteful number, since it uses less digits than its factorization.

68378004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144 (or 7139 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 68378004 is about 8269.0993463617. The cubic root of 68378004 is about 408.9204277662.

It can be divided in two parts, 6837 and 8004, that added together give a palindrome (14841).

The spelling of 68378004 in words is "sixty-eight million, three hundred seventy-eight thousand, four".