80378687 has 8 divisors (see below), whose sum is σ = 82317600. Its totient is φ = 78455520.

The previous prime is 80378677. The next prime is 80378719. The reversal of 80378687 is 78687308.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80378687 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 (80378677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6737 + ... + 14357.

It is an arithmetic number, because the mean of its divisors is an integer number (10289700).

Almost surely, 2^80378687 is an apocalyptic number.

80378687 is a deficient number, since it is larger than the sum of its proper divisors (1938913).

80378687 is a wasteful number, since it uses less digits than its factorization.

80378687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7873.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 80378687 is about 8965.4161643507. The cubic root of 80378687 is about 431.5657484021.

It can be divided in two parts, 803 and 78687, that multiplied together give a triangular number (63185661 = T₁₁₂₄₁).

The spelling of 80378687 in words is "eighty million, three hundred seventy-eight thousand, six hundred eighty-seven".