80421687 has 16 divisors (see below), whose sum is σ = 119584480. Its totient is φ = 53415936.

The previous prime is 80421673. The next prime is 80421697. The reversal of 80421687 is 78612408.

It is not a de Polignac number, because 80421687 - 2⁸ = 80421431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80421637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2103 + ... + 12855.

It is an arithmetic number, because the mean of its divisors is an integer number (7474030).

Almost surely, 2^80421687 is an apocalyptic number.

80421687 is a deficient number, since it is larger than the sum of its proper divisors (39162793).

80421687 is a wasteful number, since it uses less digits than its factorization.

80421687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11039 (or 11033 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 80421687 is about 8967.8139476686. The cubic root of 80421687 is about 431.6426925925.

The spelling of 80421687 in words is "eighty million, four hundred twenty-one thousand, six hundred eighty-seven".