80261705 has 8 divisors (see below), whose sum is σ = 99635400. Its totient is φ = 61995136.

The previous prime is 80261683. The next prime is 80261729. The reversal of 80261705 is 50716208.

It can be written as a sum of positive squares in 4 ways, for example, as 27321529 + 52940176 = 5227^2 + 7276^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 80261705 - 2¹⁰ = 80260681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 7 ways as a sum of consecutive naturals, for example, 276620 + ... + 276909.

It is an arithmetic number, because the mean of its divisors is an integer number (12454425).

Almost surely, 2^80261705 is an apocalyptic number.

It is an amenable number.

80261705 is a deficient number, since it is larger than the sum of its proper divisors (19373695).

80261705 is a wasteful number, since it uses less digits than its factorization.

80261705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553563.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 80261705 is about 8958.8897191561. The cubic root of 80261705 is about 431.3562818631.

The spelling of 80261705 in words is "eighty million, two hundred sixty-one thousand, seven hundred five".