80680390 has 32 divisors (see below), whose sum is σ = 166281984. Its totient is φ = 27610080.

The previous prime is 80680381. The next prime is 80680393. The reversal of 80680390 is 9308608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80680393) 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, 67377 + ... + 68563.

It is an arithmetic number, because the mean of its divisors is an integer number (5196312).

Almost surely, 2^80680390 is an apocalyptic number.

80680390 is an abundant number, since it is smaller than the sum of its proper divisors (85601594).

80680390 is a wasteful number, since it uses less digits than its factorization.

80680390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 80680390 is about 8982.2263387203. The cubic root of 80680390 is about 432.1050377589.

Adding to 80680390 its reverse (9308608), we get a palindrome (89988998).

The spelling of 80680390 in words is "eighty million, six hundred eighty thousand, three hundred ninety".