82704405 has 48 divisors (see below), whose sum is σ = 163010880. Its totient is φ = 35578368.

The previous prime is 82704383. The next prime is 82704449. The reversal of 82704405 is 50440728.

It is not a de Polignac number, because 82704405 - 2⁶ = 82704341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9186 + ... + 15804.

It is an arithmetic number, because the mean of its divisors is an integer number (3396060).

Almost surely, 2^82704405 is an apocalyptic number.

82704405 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

82704405 is a deficient number, since it is larger than the sum of its proper divisors (80306475).

82704405 is a wasteful number, since it uses less digits than its factorization.

82704405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6658 (or 6651 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 82704405 is about 9094.1962261653. The cubic root of 82704405 is about 435.6886173435.

The spelling of 82704405 in words is "eighty-two million, seven hundred four thousand, four hundred five".