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6981201 = 33258563
BaseRepresentation
bin11010101000011001010001
3111010200102000
4122220121101
53241344301
6405344213
7113224233
oct32503121
914120360
106981201
113a39097
122408069
1315a57b6
14cda253
1592d786
hex6a8651

6981201 has 8 divisors (see below), whose sum is σ = 10342560. Its totient is φ = 4654116.

The previous prime is 6981181. The next prime is 6981211. The reversal of 6981201 is 1021896.

It is not a de Polignac number, because 6981201 - 211 = 6979153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 258563 = 6981201 / (6 + 9 + 8 + 1 + 2 + 0 + 1).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6981211) 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, 129255 + ... + 129308.

It is an arithmetic number, because the mean of its divisors is an integer number (1292820).

Almost surely, 26981201 is an apocalyptic number.

It is an amenable number.

6981201 is a deficient number, since it is larger than the sum of its proper divisors (3361359).

6981201 is a wasteful number, since it uses less digits than its factorization.

6981201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258572 (or 258566 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 6981201 is about 2642.1962455503. The cubic root of 6981201 is about 191.1217209747.

The spelling of 6981201 in words is "six million, nine hundred eighty-one thousand, two hundred one".

Divisors: 1 3 9 27 258563 775689 2327067 6981201