80837405 has 32 divisors (see below), whose sum is σ = 108822528. Its totient is φ = 57153600.

The previous prime is 80837401. The next prime is 80837411. The reversal of 80837405 is 50473808.

It is not a de Polignac number, because 80837405 - 2² = 80837401 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80837401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 495854 + ... + 496016.

It is an arithmetic number, because the mean of its divisors is an integer number (3400704).

Almost surely, 2^80837405 is an apocalyptic number.

It is an amenable number.

80837405 is a deficient number, since it is larger than the sum of its proper divisors (27985123).

80837405 is a wasteful number, since it uses less digits than its factorization.

80837405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 80837405 is about 8990.9624067727. The cubic root of 80837405 is about 432.3851678165.

The spelling of 80837405 in words is "eighty million, eight hundred thirty-seven thousand, four hundred five".