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80676421 = 785913417
BaseRepresentation
bin1001100111100…
…00011001000101
312121210210020121
410303300121011
5131123121141
612001101541
71666511140
oct463603105
9177723217
1080676421
11415a3431
12230278b1
1313939237
14aa01057
1571391d1
hex4cf0645

80676421 has 8 divisors (see below), whose sum is σ = 92315840. Its totient is φ = 69065568.

The previous prime is 80676419. The next prime is 80676439. The reversal of 80676421 is 12467608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80676421 - 21 = 80676419 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 (80676121) 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, 696 + ... + 12721.

It is an arithmetic number, because the mean of its divisors is an integer number (11539480).

Almost surely, 280676421 is an apocalyptic number.

It is an amenable number.

80676421 is a deficient number, since it is larger than the sum of its proper divisors (11639419).

80676421 is a wasteful number, since it uses less digits than its factorization.

80676421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14283.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 80676421 is about 8982.0053996866. The cubic root of 80676421 is about 432.0979519684.

The spelling of 80676421 in words is "eighty million, six hundred seventy-six thousand, four hundred twenty-one".

Divisors: 1 7 859 6013 13417 93919 11525203 80676421