80745487 has 2 divisors, whose sum is σ = 80745488. Its totient is φ = 80745486.

The previous prime is 80745463. The next prime is 80745491. The reversal of 80745487 is 78454708.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80745487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80745187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40372743 + 40372744.

It is an arithmetic number, because the mean of its divisors is an integer number (40372744).

Almost surely, 2^80745487 is an apocalyptic number.

80745487 is a deficient number, since it is larger than the sum of its proper divisors (1).

80745487 is an equidigital number, since it uses as much as digits as its factorization.

80745487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 80745487 is about 8985.8492642599. The cubic root of 80745487 is about 432.2212212157.

The spelling of 80745487 in words is "eighty million, seven hundred forty-five thousand, four hundred eighty-seven".