80206387 has 4 divisors (see below), whose sum is σ = 80360856. Its totient is φ = 80051920.

The previous prime is 80206381. The next prime is 80206397. The reversal of 80206387 is 78360208.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 80206387 - 2¹⁵ = 80173619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80206381) 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, 76453 + ... + 77494.

It is an arithmetic number, because the mean of its divisors is an integer number (20090214).

Almost surely, 2^80206387 is an apocalyptic number.

80206387 is a deficient number, since it is larger than the sum of its proper divisors (154469).

80206387 is a wasteful number, since it uses less digits than its factorization.

80206387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154468.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 80206387 is about 8955.8018624800. The cubic root of 80206387 is about 431.2571592454.

The spelling of 80206387 in words is "eighty million, two hundred six thousand, three hundred eighty-seven".