80687953 has 2 divisors, whose sum is σ = 80687954. Its totient is φ = 80687952.

The previous prime is 80687939. The next prime is 80687969. The reversal of 80687953 is 35978608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49238289 + 31449664 = 7017^2 + 5608^2 .

It is a cyclic number.

It is not a de Polignac number, because 80687953 - 2⁹ = 80687441 is a prime.

It is not a weakly prime, because it can be changed into another prime (80687983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40343976 + 40343977.

It is an arithmetic number, because the mean of its divisors is an integer number (40343977).

Almost surely, 2^80687953 is an apocalyptic number.

It is an amenable number.

80687953 is a deficient number, since it is larger than the sum of its proper divisors (1).

80687953 is an equidigital number, since it uses as much as digits as its factorization.

80687953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 80687953 is about 8982.6473269299. The cubic root of 80687953 is about 432.1185392153.

The spelling of 80687953 in words is "eighty million, six hundred eighty-seven thousand, nine hundred fifty-three".