80687830 has 16 divisors (see below), whose sum is σ = 146052720. Its totient is φ = 32094112.

The previous prime is 80687819. The next prime is 80687839. The reversal of 80687830 is 3878608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80687839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20749 + ... + 24328.

It is an arithmetic number, because the mean of its divisors is an integer number (9128295).

Almost surely, 2^80687830 is an apocalyptic number.

80687830 is a deficient number, since it is larger than the sum of its proper divisors (65364890).

80687830 is a wasteful number, since it uses less digits than its factorization.

80687830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45263.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 80687830 is about 8982.6404803933. The cubic root of 80687830 is about 432.1183196426.

The spelling of 80687830 in words is "eighty million, six hundred eighty-seven thousand, eight hundred thirty".