71887407 has 16 divisors (see below), whose sum is σ = 102883680. Its totient is φ = 44485632.

The previous prime is 71887367. The next prime is 71887421. The reversal of 71887407 is 70478817.

It is not a de Polignac number, because 71887407 - 2¹⁵ = 71854639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71887447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5932 + ... + 13377.

It is an arithmetic number, because the mean of its divisors is an integer number (6430230).

Almost surely, 2^71887407 is an apocalyptic number.

71887407 is a deficient number, since it is larger than the sum of its proper divisors (30996273).

71887407 is a wasteful number, since it uses less digits than its factorization.

71887407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19402.

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

The square root of 71887407 is about 8478.6441722719. The cubic root of 71887407 is about 415.7997969571.

The spelling of 71887407 in words is "seventy-one million, eight hundred eighty-seven thousand, four hundred seven".