80700000 has 144 divisors (see below), whose sum is σ = 265764240. Its totient is φ = 21440000.

The previous prime is 80699989. The next prime is 80700007. The reversal of 80700000 is 708.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80700007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 299866 + ... + 300134.

It is an arithmetic number, because the mean of its divisors is an integer number (1845585).

Almost surely, 2^80700000 is an apocalyptic number.

80700000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80700000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132882120).

80700000 is an abundant number, since it is smaller than the sum of its proper divisors (185064240).

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

80700000 is an equidigital number, since it uses as much as digits as its factorization.

80700000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 80700000 is about 8983.3178725903. The cubic root of 80700000 is about 432.1400437596.

Adding to 80700000 its reverse (708), we get a palindrome (80700708).

The spelling of 80700000 in words is "eighty million, seven hundred thousand".