80634543 has 16 divisors (see below), whose sum is σ = 117801216. Its totient is φ = 48655040.

The previous prime is 80634539. The next prime is 80634557. The reversal of 80634543 is 34543608.

It is a cyclic number.

It is not a de Polignac number, because 80634543 - 2² = 80634539 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80634143) 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, 2446 + ... + 12932.

It is an arithmetic number, because the mean of its divisors is an integer number (7362576).

Almost surely, 2^80634543 is an apocalyptic number.

80634543 is a deficient number, since it is larger than the sum of its proper divisors (37166673).

80634543 is a wasteful number, since it uses less digits than its factorization.

80634543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10734.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 80634543 is about 8979.6738804925. The cubic root of 80634543 is about 432.0231736969.

The spelling of 80634543 in words is "eighty million, six hundred thirty-four thousand, five hundred forty-three".