71478087 has 8 divisors (see below), whose sum is σ = 96919680. Its totient is φ = 46844280.

The previous prime is 71478073. The next prime is 71478091. The reversal of 71478087 is 78087417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-71478087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71478287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201739 + ... + 202092.

It is an arithmetic number, because the mean of its divisors is an integer number (12114960).

Almost surely, 2^71478087 is an apocalyptic number.

71478087 is a deficient number, since it is larger than the sum of its proper divisors (25441593).

71478087 is a wasteful number, since it uses less digits than its factorization.

71478087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403893.

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 71478087 is about 8454.4714204970. The cubic root of 71478087 is about 415.0091196525.

The spelling of 71478087 in words is "seventy-one million, four hundred seventy-eight thousand, eighty-seven".