80351605 has 32 divisors (see below), whose sum is σ = 108591840. Its totient is φ = 56770560.

The previous prime is 80351573. The next prime is 80351629. The reversal of 80351605 is 50615308.

It can be written as a sum of positive squares in 16 ways, for example, as 5026564 + 75325041 = 2242^2 + 8679^2 .

It is not a de Polignac number, because 80351605 - 2⁵ = 80351573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90765 + ... + 91645.

It is an arithmetic number, because the mean of its divisors is an integer number (3393495).

Almost surely, 2^80351605 is an apocalyptic number.

80351605 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80351605 is a deficient number, since it is larger than the sum of its proper divisors (28240235).

80351605 is a wasteful number, since it uses less digits than its factorization.

80351605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 80351605 is about 8963.9056777724. The cubic root of 80351605 is about 431.5172737923.

The spelling of 80351605 in words is "eighty million, three hundred fifty-one thousand, six hundred five".