80699546 has 4 divisors (see below), whose sum is σ = 121049322. Its totient is φ = 40349772.

The previous prime is 80699543. The next prime is 80699569. The reversal of 80699546 is 64599608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 75881521 + 4818025 = 8711^2 + 2195^2 .

It is a super-2 number, since 2×80699546² = 13024833449212232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80699546.

It is not an unprimeable number, because it can be changed into a prime (80699543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20174885 + ... + 20174888.

Almost surely, 2^80699546 is an apocalyptic number.

80699546 is a deficient number, since it is larger than the sum of its proper divisors (40349776).

80699546 is a wasteful number, since it uses less digits than its factorization.

80699546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40349775.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 80699546 is about 8983.2926034946. The cubic root of 80699546 is about 432.1392333839.

The spelling of 80699546 in words is "eighty million, six hundred ninety-nine thousand, five hundred forty-six".