80105629 has 4 divisors (see below), whose sum is σ = 82270684. Its totient is φ = 77940576.

The previous prime is 80105617. The next prime is 80105671. The reversal of 80105629 is 92650108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76212900 + 3892729 = 8730^2 + 1973^2 .

It is a cyclic number.

It is not a de Polignac number, because 80105629 - 2⁹ = 80105117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80105629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80105609) 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, 1082472 + ... + 1082545.

It is an arithmetic number, because the mean of its divisors is an integer number (20567671).

Almost surely, 2^80105629 is an apocalyptic number.

It is an amenable number.

80105629 is a deficient number, since it is larger than the sum of its proper divisors (2165055).

80105629 is a wasteful number, since it uses less digits than its factorization.

80105629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165054.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 80105629 is about 8950.1748027622. The cubic root of 80105629 is about 431.0764969202.

The spelling of 80105629 in words is "eighty million, one hundred five thousand, six hundred twenty-nine".