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613381407 = 32931227431
BaseRepresentation
bin100100100011110…
…111010100011111
31120202012000002220
4210203313110133
52224011201112
6140510520423
721125440662
oct4443672437
91522160086
10613381407
11295268591
12151506113
139a1025a2
145b66b6d9
1538cb298c
hex248f751f

613381407 has 16 divisors (see below), whose sum is σ = 873338880. Its totient is φ = 382082400.

The previous prime is 613381399. The next prime is 613381441. The reversal of 613381407 is 704183316.

It is not a de Polignac number, because 613381407 - 23 = 613381399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613381207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111019 + ... + 116412.

It is an arithmetic number, because the mean of its divisors is an integer number (54583680).

Almost surely, 2613381407 is an apocalyptic number.

613381407 is a deficient number, since it is larger than the sum of its proper divisors (259957473).

613381407 is a wasteful number, since it uses less digits than its factorization.

613381407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227494.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 613381407 is about 24766.5380503614. The cubic root of 613381407 is about 849.6567966227.

The spelling of 613381407 in words is "six hundred thirteen million, three hundred eighty-one thousand, four hundred seven".

Divisors: 1 3 29 31 87 93 899 2697 227431 682293 6595499 7050361 19786497 21151083 204460469 613381407