71678900 has 18 divisors (see below), whose sum is σ = 155543430. Its totient is φ = 28671520.

The previous prime is 71678897. The next prime is 71678903. The reversal of 71678900 is 987617.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71678897) and next prime (71678903).

It can be written as a sum of positive squares in 3 ways, for example, as 13278736 + 58400164 = 3644^2 + 7642^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71678903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 358295 + ... + 358494.

Almost surely, 2^71678900 is an apocalyptic number.

It is an amenable number.

71678900 is an abundant number, since it is smaller than the sum of its proper divisors (83864530).

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

71678900 is a wasteful number, since it uses less digits than its factorization.

71678900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716803 (or 716796 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 71678900 is about 8466.3392325137. The cubic root of 71678900 is about 415.3974032326.

The spelling of 71678900 in words is "seventy-one million, six hundred seventy-eight thousand, nine hundred".