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80680807 = 137588911
BaseRepresentation
bin1001100111100…
…01011101100111
312121211000021001
410303301131213
5131123241212
612001134131
71666530004
oct463613547
9177730231
1080680807
11415a6759
122302a347
131393b22c
14aa028ab
15713a657
hex4cf1767

80680807 has 4 divisors (see below), whose sum is σ = 81269856. Its totient is φ = 80091760.

The previous prime is 80680777. The next prime is 80680823. The reversal of 80680807 is 70808608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80680807 - 219 = 80156519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80680867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294319 + ... + 294592.

It is an arithmetic number, because the mean of its divisors is an integer number (20317464).

Almost surely, 280680807 is an apocalyptic number.

80680807 is a deficient number, since it is larger than the sum of its proper divisors (589049).

80680807 is a wasteful number, since it uses less digits than its factorization.

80680807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589048.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 80680807 is about 8982.2495511982. The cubic root of 80680807 is about 432.1057822087.

The spelling of 80680807 in words is "eighty million, six hundred eighty thousand, eight hundred seven".

Divisors: 1 137 588911 80680807