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7986013 = 71140859
BaseRepresentation
bin11110011101101101011101
3120000201202021
4132131231131
54021023023
6443100141
7124610560
oct36355535
916021667
107986013
114565012
122811651
131867c69
1410bc4d7
15a7b35d
hex79db5d

7986013 has 4 divisors (see below), whose sum is σ = 9126880. Its totient is φ = 6845148.

The previous prime is 7986007. The next prime is 7986019. The reversal of 7986013 is 3106897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (7986007) and next prime (7986019).

It is a cyclic number.

It is not a de Polignac number, because 7986013 - 29 = 7985501 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7986013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7986019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570423 + ... + 570436.

It is an arithmetic number, because the mean of its divisors is an integer number (2281720).

Almost surely, 27986013 is an apocalyptic number.

It is an amenable number.

7986013 is a deficient number, since it is larger than the sum of its proper divisors (1140867).

7986013 is a wasteful number, since it uses less digits than its factorization.

7986013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140866.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 7986013 is about 2825.9534674159. The cubic root of 7986013 is about 199.8833736714.

The spelling of 7986013 in words is "seven million, nine hundred eighty-six thousand, thirteen".

Divisors: 1 7 1140859 7986013