80942787 has 16 divisors (see below), whose sum is σ = 120130560. Its totient is φ = 53865000.

The previous prime is 80942777. The next prime is 80942803. The reversal of 80942787 is 78724908.

It is not a de Polignac number, because 80942787 - 2¹⁵ = 80910019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80942737) 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 in 15 ways as a sum of consecutive naturals, for example, 14662 + ... + 19412.

It is an arithmetic number, because the mean of its divisors is an integer number (7508160).

Almost surely, 2^80942787 is an apocalyptic number.

80942787 is a deficient number, since it is larger than the sum of its proper divisors (39187773).

80942787 is a wasteful number, since it uses less digits than its factorization.

80942787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391 (or 5385 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 80942787 is about 8996.8209385316. The cubic root of 80942787 is about 432.5729762032.

The spelling of 80942787 in words is "eighty million, nine hundred forty-two thousand, seven hundred eighty-seven".