80766699 has 16 divisors (see below), whose sum is σ = 117280800. Its totient is φ = 49142016.

The previous prime is 80766683. The next prime is 80766797. The reversal of 80766699 is 99666708.

It is a happy number.

It is not a de Polignac number, because 80766699 - 2⁴ = 80766683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80766629) 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, 8164 + ... + 15105.

It is an arithmetic number, because the mean of its divisors is an integer number (7330050).

Almost surely, 2^80766699 is an apocalyptic number.

80766699 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

80766699 is a deficient number, since it is larger than the sum of its proper divisors (36514101).

80766699 is a wasteful number, since it uses less digits than its factorization.

80766699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23374.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 80766699 is about 8987.0294869885. The cubic root of 80766699 is about 432.2590663600.

The spelling of 80766699 in words is "eighty million, seven hundred sixty-six thousand, six hundred ninety-nine".