80207649 has 24 divisors (see below), whose sum is σ = 126907560. Its totient is φ = 48588288.

The previous prime is 80207639. The next prime is 80207663. The reversal of 80207649 is 94670208.

80207649 is a `hidden beast` number, since 8 + 0 + 2 + 0 + 7 + 649 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 46335249 + 33872400 = 6807^2 + 5820^2 .

It is not a de Polignac number, because 80207649 - 2¹⁵ = 80174881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80207629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4602 + ... + 13475.

It is an arithmetic number, because the mean of its divisors is an integer number (5287815).

Almost surely, 2^80207649 is an apocalyptic number.

It is an amenable number.

80207649 is a deficient number, since it is larger than the sum of its proper divisors (46699911).

80207649 is a wasteful number, since it uses less digits than its factorization.

80207649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18129 (or 18126 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80207649 is about 8955.8723193221. The cubic root of 80207649 is about 431.2594210922.

The spelling of 80207649 in words is "eighty million, two hundred seven thousand, six hundred forty-nine".