71394885 has 32 divisors (see below), whose sum is σ = 127296000. Its totient is φ = 37965888.

The previous prime is 71394877. The next prime is 71394887. The reversal of 71394885 is 58849317.

It is not a de Polignac number, because 71394885 - 2³ = 71394877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 71394885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71394887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68196 + ... + 69234.

It is an arithmetic number, because the mean of its divisors is an integer number (3978000).

Almost surely, 2^71394885 is an apocalyptic number.

It is an amenable number.

71394885 is a deficient number, since it is larger than the sum of its proper divisors (55901115).

71394885 is a wasteful number, since it uses less digits than its factorization.

71394885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 1556 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 71394885 is about 8449.5493962696. The cubic root of 71394885 is about 414.8480306782.

The spelling of 71394885 in words is "seventy-one million, three hundred ninety-four thousand, eight hundred eighty-five".