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80680501 = 1121913491
BaseRepresentation
bin1001100111100…
…01011000110101
312121210222211201
410303301120311
5131123234001
612001132501
71666526056
oct463613065
9177728751
1080680501
11415a6500
122302a131
131393b055
14aa0272d
15713a501
hex4cf1635

80680501 has 12 divisors (see below), whose sum is σ = 89171712. Its totient is φ = 72941000.

The previous prime is 80680499. The next prime is 80680519. The reversal of 80680501 is 10508608.

It is a happy number.

It is not a de Polignac number, because 80680501 - 21 = 80680499 is a prime.

It is a super-2 number, since 2×806805012 = 13018686483222002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80680501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80680571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21366 + ... + 24856.

It is an arithmetic number, because the mean of its divisors is an integer number (7430976).

Almost surely, 280680501 is an apocalyptic number.

It is an amenable number.

80680501 is a deficient number, since it is larger than the sum of its proper divisors (8491211).

80680501 is a wasteful number, since it uses less digits than its factorization.

80680501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704 (or 3693 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 80680501 is about 8982.2325175872. The cubic root of 80680501 is about 432.1052359221.

The spelling of 80680501 in words is "eighty million, six hundred eighty thousand, five hundred one".

Divisors: 1 11 121 191 2101 3491 23111 38401 422411 666781 7334591 80680501