71682804 has 18 divisors (see below), whose sum is σ = 181198290. Its totient is φ = 23894256.

The previous prime is 71682797. The next prime is 71682811. The reversal of 71682804 is 40828617.

It is an interprime number because it is at equal distance from previous prime (71682797) and next prime (71682811).

It can be written as a sum of positive squares in only one way, i.e., 67272804 + 4410000 = 8202^2 + 2100^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1991189 = 71682804 / (7 + 1 + 6 + 8 + 2 + 8 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 995559 + ... + 995630.

Almost surely, 2^71682804 is an apocalyptic number.

It is an amenable number.

71682804 is an abundant number, since it is smaller than the sum of its proper divisors (109515486).

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

71682804 is a wasteful number, since it uses less digits than its factorization.

71682804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991199 (or 1991194 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 71682804 is about 8466.5697894720. The cubic root of 71682804 is about 415.4049446524.

The spelling of 71682804 in words is "seventy-one million, six hundred eighty-two thousand, eight hundred four".