80661010 has 16 divisors (see below), whose sum is σ = 145457856. Its totient is φ = 32204848.

The previous prime is 80660969. The next prime is 80661017. The reversal of 80661010 is 1016608.

It is not an unprimeable number, because it can be changed into a prime (80661017) 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, 1534 + ... + 12793.

It is an arithmetic number, because the mean of its divisors is an integer number (9091116).

Almost surely, 2^80661010 is an apocalyptic number.

80661010 is a deficient number, since it is larger than the sum of its proper divisors (64796846).

80661010 is a wasteful number, since it uses less digits than its factorization.

80661010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14897.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 80661010 is about 8981.1474767983. The cubic root of 80661010 is about 432.0704367601.

Adding to 80661010 its reverse (1016608), we get a palindrome (81677618).

It can be divided in two parts, 806 and 61010, that added together give a palindrome (61816).

The spelling of 80661010 in words is "eighty million, six hundred sixty-one thousand, ten".