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645301013 = 7835412053
BaseRepresentation
bin100110011101101…
…000001100010101
31122222020200120112
4212131220030111
52310144113023
6144011012405
721663653030
oct4635501425
91588220515
10645301013
1130128a225
1216013a105
13a38ca226
14619ba017
153b9ba478
hex26768315

645301013 has 16 divisors (see below), whose sum is σ = 748116096. Its totient is φ = 545175360.

The previous prime is 645301003. The next prime is 645301021. The reversal of 645301013 is 310103546.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-645301013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 645301013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645301003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313295 + ... + 315347.

It is an arithmetic number, because the mean of its divisors is an integer number (46757256).

Almost surely, 2645301013 is an apocalyptic number.

It is an amenable number.

645301013 is a deficient number, since it is larger than the sum of its proper divisors (102815083).

645301013 is a wasteful number, since it uses less digits than its factorization.

645301013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 645301013 is about 25402.7756947937. The cubic root of 645301013 is about 864.1466465796.

Adding to 645301013 its reverse (310103546), we get a palindrome (955404559).

The spelling of 645301013 in words is "six hundred forty-five million, three hundred one thousand, thirteen".

Divisors: 1 7 83 541 581 2053 3787 14371 44903 170399 314321 1110673 1192793 7774711 92185859 645301013