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330925681 is a prime number
BaseRepresentation
bin10011101110011…
…000011001110001
3212001200202200201
4103232120121301
51134204110211
652500515201
711125551622
oct2356303161
9761622621
10330925681
1115a8873a9
12929abb01
1353738218
1431d43a49
151e0bc0c1
hex13b98671

330925681 has 2 divisors, whose sum is σ = 330925682. Its totient is φ = 330925680.

The previous prime is 330925649. The next prime is 330925687. The reversal of 330925681 is 186529033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220255281 + 110670400 = 14841^2 + 10520^2 .

It is a cyclic number.

It is not a de Polignac number, because 330925681 - 25 = 330925649 is a prime.

It is a super-2 number, since 2×3309256812 = 219023612690627522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 330925681.

It is not a weakly prime, because it can be changed into another prime (330925687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165462840 + 165462841.

It is an arithmetic number, because the mean of its divisors is an integer number (165462841).

Almost surely, 2330925681 is an apocalyptic number.

It is an amenable number.

330925681 is a deficient number, since it is larger than the sum of its proper divisors (1).

330925681 is an equidigital number, since it uses as much as digits as its factorization.

330925681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 330925681 is about 18191.3628131594. The cubic root of 330925681 is about 691.6878659847.

The spelling of 330925681 in words is "three hundred thirty million, nine hundred twenty-five thousand, six hundred eighty-one".