80615340 has 144 divisors (see below), whose sum is σ = 269313408. Its totient is φ = 19395072.

The previous prime is 80615329. The next prime is 80615357. The reversal of 80615340 is 4351608.

80615340 is a `hidden beast` number, since 8 + 0 + 615 + 3 + 40 = 666.

It is a zygodrome in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109614 + ... + 110346.

It is an arithmetic number, because the mean of its divisors is an integer number (1870232).

Almost surely, 2^80615340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80615340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134656704).

80615340 is an abundant number, since it is smaller than the sum of its proper divisors (188698068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80615340 is a wasteful number, since it uses less digits than its factorization.

80615340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 80615340 is about 8978.6045686398. The cubic root of 80615340 is about 431.9888757424.

Adding to 80615340 its reverse (4351608), we get a palindrome (84966948).

The spelling of 80615340 in words is "eighty million, six hundred fifteen thousand, three hundred forty".