81627412 has 12 divisors (see below), whose sum is σ = 143567200. Its totient is φ = 40608216.

The previous prime is 81627407. The next prime is 81627419. The reversal of 81627412 is 21472618.

81627412 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

81627412 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81627419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50478 + ... + 52069.

Almost surely, 2^81627412 is an apocalyptic number.

It is an amenable number.

81627412 is a deficient number, since it is larger than the sum of its proper divisors (61939788).

81627412 is a wasteful number, since it uses less digits than its factorization.

81627412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102750 (or 102748 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 81627412 is about 9034.7889848076. The cubic root of 81627412 is about 433.7891406349.

The spelling of 81627412 in words is "eighty-one million, six hundred twenty-seven thousand, four hundred twelve".