83261605 has 16 divisors (see below), whose sum is σ = 114422400. Its totient is φ = 56976192.

The previous prime is 83261603. The next prime is 83261617. The reversal of 83261605 is 50616238.

It is not a de Polignac number, because 83261605 - 2¹ = 83261603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83261603) 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, 16971 + ... + 21319.

It is an arithmetic number, because the mean of its divisors is an integer number (7151400).

Almost surely, 2^83261605 is an apocalyptic number.

It is an amenable number.

83261605 is a deficient number, since it is larger than the sum of its proper divisors (31160795).

83261605 is a wasteful number, since it uses less digits than its factorization.

83261605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 83261605 is about 9124.7797233687. The cubic root of 83261605 is about 436.6648754532.

The spelling of 83261605 in words is "eighty-three million, two hundred sixty-one thousand, six hundred five".