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103078687 = 643160309
BaseRepresentation
bin1100010010011…
…01101100011111
321011221221101011
412021031230133
5202342004222
614121200051
72361103645
oct611155437
9234857334
10103078687
11532045a8
122a630027
1318480c0a
14d993195
1590b1c77
hex624db1f

103078687 has 4 divisors (see below), whose sum is σ = 103239640. Its totient is φ = 102917736.

The previous prime is 103078669. The next prime is 103078691. The reversal of 103078687 is 786870301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786870301 = 7112410043.

It is a cyclic number.

It is not a de Polignac number, because 103078687 - 219 = 102554399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103078607) 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, 79512 + ... + 80797.

It is an arithmetic number, because the mean of its divisors is an integer number (25809910).

Almost surely, 2103078687 is an apocalyptic number.

103078687 is a deficient number, since it is larger than the sum of its proper divisors (160953).

103078687 is an equidigital number, since it uses as much as digits as its factorization.

103078687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160952.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 103078687 is about 10152.7674552311. The cubic root of 103078687 is about 468.8741530221.

The spelling of 103078687 in words is "one hundred three million, seventy-eight thousand, six hundred eighty-seven".

Divisors: 1 643 160309 103078687