80764987 has 2 divisors, whose sum is σ = 80764988. Its totient is φ = 80764986.

The previous prime is 80764973. The next prime is 80764997. The reversal of 80764987 is 78946708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80764987 - 2²³ = 72376379 is a prime.

It is a super-2 number, since 2×80764987² = 13045966250220338, 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 80764987.

It is not a weakly prime, because it can be changed into another prime (80764927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40382493 + 40382494.

It is an arithmetic number, because the mean of its divisors is an integer number (40382494).

Almost surely, 2^80764987 is an apocalyptic number.

80764987 is a deficient number, since it is larger than the sum of its proper divisors (1).

80764987 is an equidigital number, since it uses as much as digits as its factorization.

80764987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 80764987 is about 8986.9342381037. The cubic root of 80764987 is about 432.2560121608.

The spelling of 80764987 in words is "eighty million, seven hundred sixty-four thousand, nine hundred eighty-seven".