80613405 has 48 divisors (see below), whose sum is σ = 149071104. Its totient is φ = 40158720.

The previous prime is 80613373. The next prime is 80613427. The reversal of 80613405 is 50431608.

80613405 is a `hidden beast` number, since 8 + 0 + 613 + 40 + 5 = 666.

It is not a de Polignac number, because 80613405 - 2⁵ = 80613373 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127440 + ... + 128070.

It is an arithmetic number, because the mean of its divisors is an integer number (3105648).

Almost surely, 2^80613405 is an apocalyptic number.

80613405 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80613405 is a deficient number, since it is larger than the sum of its proper divisors (68457699).

80613405 is a wasteful number, since it uses less digits than its factorization.

80613405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 80613405 is about 8978.4968118277. The cubic root of 80613405 is about 431.9854193896.

It can be divided in two parts, 80613 and 405, that added together give a palindrome (81018).

The spelling of 80613405 in words is "eighty million, six hundred thirteen thousand, four hundred five".